--map-syntax takes just one value

This adds a `-m`/`--map-syntax` option that allows users to (re)map
certain file extensions or file names to an existing syntax.

For example:
```
bat --map-syntax .config:json
```

The option can be use multiple times. Note that you can easily make
these mappings permanent by using `bat`s new configuration file.

closes #169

.gitmodules

@@ -91,3 +91,6 @@
 [submodule "assets/syntaxes/PowerShell"]
 	path = assets/syntaxes/PowerShell
 	url = https://github.com/PowerShell/EditorSyntax
+[submodule "assets/syntaxes/Robot"]
+	path = assets/syntaxes/Robot
+	url = https://github.com/andriyko/sublime-robot-framework-assistant.git

.travis.yml

@@ -32,15 +32,15 @@ matrix:
 
     # Minimum Rust supported channel.
     - os: linux
-      rust: 1.26.0
+      rust: 1.29.0
       env: TARGET=x86_64-unknown-linux-gnu
     - os: linux
-      rust: 1.26.0
+      rust: 1.29.0
       env:
         - TARGET=x86_64-unknown-linux-musl
         - CC_x86_64_unknown_linux_musl=/usr/bin/musl-gcc
     - os: osx
-      rust: 1.26.0
+      rust: 1.29.0
       env: TARGET=x86_64-apple-darwin
 
     # Code formatting check

Cargo.lock

@@ -3,7 +3,15 @@ name = "aho-corasick"
 version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "memchr 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "ansi_colours"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -11,7 +19,18 @@ name = "ansi_term"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "assert_cmd"
+version = "0.10.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "escargot 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates-tree 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -21,32 +40,38 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "base64"
-version = "0.8.0"
+version = "0.9.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "safemem 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "safemem 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "bat"
-version = "0.7.0"
+version = "0.8.0"
 dependencies = [
+ "ansi_colours 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "assert_cmd 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.32.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "console 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "directories 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "content_inspector 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "directories 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "encoding 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "error-chain 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "git2 0.7.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "syntect 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "shell-words 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syntect 3.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wild 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -55,7 +80,7 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -78,16 +103,6 @@ name = "cfg-if"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "chrono"
-version = "0.4.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "num-integer 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "clap"
 version = "2.32.0"
@@ -100,6 +115,7 @@ dependencies = [
  "term_size 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "textwrap 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -110,7 +126,7 @@ dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -121,14 +137,6 @@ dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "cmake"
-version = "0.1.33"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "console"
 version = "0.6.2"
@@ -140,28 +148,107 @@ dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "termios 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "termios 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "content_inspector"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "memchr 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "difference"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "directories"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "encoding"
+version = "0.2.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "encoding-index-japanese 1.20141219.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "encoding-index-korean 1.20141219.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "encoding-index-simpchinese 1.20141219.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "encoding-index-singlebyte 1.20141219.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "encoding-index-tradchinese 1.20141219.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "encoding-index-japanese"
+version = "1.20141219.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "encoding_index_tests 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "encoding-index-korean"
+version = "1.20141219.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "encoding_index_tests 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "encoding-index-simpchinese"
+version = "1.20141219.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "encoding_index_tests 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "encoding-index-singlebyte"
+version = "1.20141219.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "encoding_index_tests 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "encoding-index-tradchinese"
+version = "1.20141219.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "encoding_index_tests 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "encoding_index_tests"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "error-chain"
 version = "0.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "escargot"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.32 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "flate2"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -194,11 +281,24 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "libgit2-sys 0.7.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libgit2-sys 0.7.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "url 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "glob"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "humantime"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "idna"
 version = "0.1.5"
@@ -233,9 +333,14 @@ name = "lazy_static"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "version_check 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "lazycell"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "libc"
 version = "0.2.43"
@@ -243,19 +348,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libgit2-sys"
-version = "0.7.7"
+version = "0.7.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "cmake 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "libz-sys 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libz-sys 1.0.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "libz-sys"
-version = "1.0.20"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -271,7 +375,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lock_api"
-version = "0.1.3"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -293,10 +397,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "memchr"
-version = "2.0.2"
+version = "2.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -308,33 +414,20 @@ dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "num-integer"
-version = "0.1.39"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "num-traits 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "onig"
-version = "3.2.2"
+version = "4.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "onig_sys 68.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "onig_sys 69.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "onig_sys"
-version = "68.2.1"
+version = "69.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -355,7 +448,7 @@ name = "parking_lot"
 version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lock_api 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lock_api 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "parking_lot_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -368,7 +461,7 @@ dependencies = [
  "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -383,30 +476,58 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "plist"
-version = "0.2.4"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "base64 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "base64 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "humantime 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
  "xml-rs 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "predicates"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "predicates-tree"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "treeline 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "proc-macro2"
-version = "0.4.19"
+version = "0.4.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "quick-error"
+version = "1.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "quote"
 version = "0.6.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -416,7 +537,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -427,13 +548,21 @@ dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rand_core"
-version = "0.2.1"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -455,17 +584,12 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "memchr 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memchr 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-syntax 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
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@@ -479,7 +603,7 @@ name = "remove_dir_all"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -497,7 +621,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "safemem"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -528,29 +652,37 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.78"
+version = "1.0.79"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "serde_derive 1.0.79 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
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 dependencies = [
- "proc-macro2 0.4.19 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 0.4.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.9 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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+version = "1.0.32"
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- "serde 1.0.78 (registry+https://github.com/rust-lang/crates.io-index)",
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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@@ -571,32 +703,33 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
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- "yaml-rust 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "yaml-rust 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@@ -630,7 +763,7 @@ dependencies = [
 
 [[package]]
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 source = "registry+https://github.com/rust-lang/crates.io-index"
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@@ -654,14 +787,9 @@ dependencies = [
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 [[package]]
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 [[package]]
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@@ -719,9 +847,14 @@ name = "vcpkg"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "vec_map"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
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-version = "0.1.4"
+version = "0.1.5"
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 [[package]]
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- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
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+
 [[package]]
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@@ -746,7 +887,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
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@@ -768,7 +909,7 @@ name = "winapi-util"
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 dependencies = [
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@@ -786,7 +927,7 @@ dependencies = [
 
 [[package]]
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 "checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
-"checksum time 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)" = "d825be0eb33fda1a7e68012d51e9c7f451dc1a69391e7fdc197060bb8c56667b"
+"checksum treeline 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
 "checksum ucd-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fd2be2d6639d0f8fe6cdda291ad456e23629558d466e2789d2c3e9892bda285d"
 "checksum unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
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@@ -881,14 +1038,16 @@ dependencies = [
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 "checksum vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "def296d3eb3b12371b2c7d0e83bfe1403e4db2d7a0bba324a12b21c4ee13143d"
-"checksum version_check 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7716c242968ee87e5542f8021178248f267f295a5c4803beae8b8b7fd9bc6051"
+"checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
+"checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
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+"checksum wild 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "690e5dbd46cfaf2f3bd09875ad94e92cc56459fce505807d6ce5332671aa93ae"
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+"checksum yaml-rust 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "95acf0db5515d07da9965ec0e0ba6cc2d825e2caeb7303b66ca441729801254e"

Cargo.toml

@@ -7,18 +7,24 @@ license = "MIT/Apache-2.0"
 name = "bat"
 readme = "README.md"
 repository = "https://github.com/sharkdp/bat"
-version = "0.7.0"
+version = "0.8.0"
 exclude = [
     "assets/syntaxes/*",
     "assets/themes/*",
 ]
+build = "build.rs"
 
 [dependencies]
 atty = "0.2.2"
 ansi_term = "0.11"
+ansi_colours = "^1.0"
 console = "0.6"
 directories = "1.0"
 lazy_static = "1.0"
+wild = "2.0"
+content_inspector = "0.2.3"
+encoding = "0.2"
+shell-words = "0.1.0"
 
 [dependencies.git2]
 version = "0.7"
@@ -26,7 +32,7 @@ default-features = false
 features = []
 
 [dependencies.syntect]
-version = "2.1"
+version = "3.0.1"
 default-features = false
 features = ["parsing", "yaml-load", "dump-load", "dump-create"]
 
@@ -42,3 +48,7 @@ features = []
 
 [dev-dependencies]
 tempdir = "0.3"
+assert_cmd = "0.10.1"
+
+[build-dependencies]
+clap = "2.32"

README.md

@@ -53,15 +53,18 @@ Display multiple files at once
 > bat src/*.rs
 ```
 
-Read from stdin, explicitly specify the language
+Read from stdin, determine the syntax automatically
+
+```bash
+> curl -s https://sh.rustup.rs | bat
+```
+
+Read from stdin, specify the language explicitly
 
 ```bash
 > yaml2json .travis.yml | json_pp | bat -l json
 ```
 
-```bash
-> curl -s https://raw.githubusercontent.com/sharkdp/bat/master/src/main.rs | bat -l rs
-```
 
 As a replacement for `cat`:
 
@@ -83,7 +86,7 @@ bat f - g  # output 'f', then stdin, then 'g'.
 Download the latest `.deb` package from the [release page](https://github.com/sharkdp/bat/releases)
 and install it via:
 ``` bash
-sudo dpkg -i bat_0.7.0_amd64.deb  # adapt version number and architecture
+sudo dpkg -i bat_0.8.0_amd64.deb  # adapt version number and architecture
 ```
 
 ### On Arch Linux
@@ -117,6 +120,14 @@ cd /usr/ports/textproc/bat
 make install
 ```
 
+### Via nix
+
+You can install `bat` using the [nix package manager](https://nixos.org/nix):
+
+```bash
+nix-env -i bat
+```
+
 ### On macOS
 
 You can install `bat` with [Homebrew](http://braumeister.org/formula/bat):
@@ -127,7 +138,7 @@ brew install bat
 
 ### On Windows
 
-You can download pre-built binaries from the [Release page](https://github.com/sharkdp/bat/releases),
+You can download prebuilt binaries from the [Release page](https://github.com/sharkdp/bat/releases),
 or install it with [scoop](https://scoop.sh/):
 
 ```bash
@@ -136,22 +147,60 @@ scoop install bat
 
 [See below](#using-bat-on-windows) for notes.
 
+### Via Docker
+
+There is a [Docker image](https://hub.docker.com/r/danlynn/bat/) that you can use to run `bat` in a container:
+```bash
+docker pull danlynn/bat
+alias bat='docker run -it --rm -e BAT_THEME -e BAT_STYLE -e BAT_TABS -v "$(pwd):/myapp" danlynn/bat'
+```
+
+### Via Ansible
+
+You can install `bat` with [Ansible](https://www.ansible.com/):
+
+```bash
+# Install role on local machine
+ansible-galaxy install aeimer.install_bat
+```
+
+```yaml
+---
+# Playbook to install bat
+- host: all
+  roles:
+    - aeimer.install_bat
+```
+
+- [Ansible Galaxy](https://galaxy.ansible.com/aeimer/install_bat)
+- [GitHub](https://github.com/aeimer/ansible-install-bat)
+
+This should work with the following distributions:
+- Debian/Ubuntu
+- ARM (eg. Raspberry PI)
+- Arch Linux
+- Void Linux
+- FreeBSD
+- MacOS
+
 ### From binaries
 
 Check out the [Release page](https://github.com/sharkdp/bat/releases) for
-prebuilt versions of `bat` for many different architectures.
+prebuilt versions of `bat` for many different architectures. Statically-linked
+binaries are available, just look for releases with `musl` in the name on the
+releases page.
 
 ### From source
 
-If you want to build `bat` from source, you need Rust 1.26 or
+If you want to build `bat` from source, you need Rust 1.29 or
 higher. You can then use `cargo` to build everything:
 
 ```bash
 cargo install bat
 ```
 
-On macOS, you might have to install `cmake` (`brew install cmake`) in order for
+You may have to install `cmake` and the `libz` development package
-some dependencies to be built.
+(`libz-dev` or `libz-devel`) in order for the build to succeed.
 
 ## Customization
 
@@ -160,9 +209,20 @@ some dependencies to be built.
 Use `bat --list-themes` to get a list of all available themes for syntax
 highlighting. To select the `TwoDark` theme, call `bat` with the
 `--theme=TwoDark` option or set the `BAT_THEME` environment variable to
-`TwoDark`. Use `export BAT_THEME="TwoDark"` in your shells startup file to
+`TwoDark`. Use `export BAT_THEME="TwoDark"` in your shell's startup file to
 make the change permanent.
 
+If you want to preview the different themes on a custom file, you can use
+the following command (you need [`fzf`](https://github.com/junegunn/fzf) for this):
+``` bash
+bat --list-themes | fzf --preview="bat --theme={} --color=always /path/to/file"
+```
+
+`bat` looks good on a dark background by default. However, if your terminal uses a
+light background, some themes will work better for you. For example, the `GitHub`
+theme is made for light backgrounds. You can also make your own theme by following the
+['Adding new themes' section below](https://github.com/sharkdp/bat#adding-new-themes).
+
 ### Output style
 
 You can use the `--style` option to control the appearance of `bat`s output.
@@ -229,14 +289,31 @@ Finally, use `bat --list-themes` to check if the new themes are available.
 `bat` uses the pager that is specified in the `PAGER` environment variable. If this variable is not
 set, `less` is used by default. If you want to use a different pager, you can either modify the
 `PAGER` variable or set the `BAT_PAGER` environment variable to override what is specified in
-`PAGER`. If you want to pass command-line arguments to the pager, you need to create a small shell
+`PAGER`.
-script as a wrapper, for example:
+
+If you want to pass command-line arguments to the pager, you need to create a small shell
+script as a wrapper, for example
 
 ```bash
 #!/bin/bash
 
-less --tabs 4 -RF "$@"
+less --tabs 4 -R "$@"
 ```
+(put this in a file `~/.bat-pager.sh`, make it executable `chmod +x ~/.bat-pager.sh` and use
+`export BAT_PAGER="$HOME/.bat-pager.sh"` in your shells `rc` file)
+
+**Note**: By default, if the pager is set to `less`, `bat` will pass the following command line
+options to the pager: `-R`/`--RAW-CONTROL-CHARS`, `-F`/`--quit-if-one-screen` and `-X`/`--no-init`.
+The first (`-R`) is needed to interpret ANSI colors correctly. The second option (`-F`) instructs
+less to exit immediately if the output size is smaller than the vertical size of the terminal.
+This is convenient for small files because you do not have to press `q` to quit the pager. The
+third option (`-X`) is needed to fix a bug with the `--quit-if-one-screen` feature in old versions
+of `less`. Unfortunately, it also breaks mouse-wheel support in `less`. If you want to enable
+mouse-wheel scrolling, you can either pass just `-R` (as in the example above, this will disable
+the quit-if-one-screen feature), or you can use a recent version of `less` and pass `-RF` which
+will hopefully enable both quit-if-one-screen and mouse-wheel scrolling.
+
+If scrolling still doesn't work for you, you can try to pass the `-S` option in addition.
 
 ## Using `bat` on Windows
 
@@ -260,6 +337,26 @@ well as in newer versions of bash. On earlier versions of Windows, you can use
 don’t have any other pagers installed, you can disable paging entirely by passing `--paging=never`
 or by setting `BAT_PAGER` to an empty string.
 
+### Cygwin
+
+`bat` on Windows does not natively support Cygwin's unix-style paths (`/cygdrive/*`). When passed an absolute cygwin path as an argument, `bat` will encounter the following error: `The system cannot find the path specified. (os error 3)`
+
+This can be solved by creating a wrapper or adding the following function to your `.bash_profile` file:
+
+```shell
+bat() {
+    local index
+    local args=("$@")
+    for index in $(seq 0 ${#args[@]}) ; do
+        case "${args[index]}" in
+        -*) continue;;
+        *)  [ -e "${args[index]}" ] && args[index]="$(cygpath --windows "${args[index]}")";;
+        esac
+    done
+    command bat "${args[@]}"
+}
+```
+
 ## Troubleshooting
 
 ### Terminals & colors
@@ -279,10 +376,6 @@ are supported (and fall back to 8-bit colors).
 Please try a different theme (see `bat --list-themes` for a list). The `OneHalfDark` and
 `OneHalfLight` themes provide grid and line colors that are brighter.
 
-### Error when compiling: "cannot find -lz"
-
-Please install the `zlib-devel` package and try again.
-
 ## Development
 
 ```bash

assets/JavaDoc.sublime-syntax.patch

@@ -0,0 +1,13 @@
+diff --git syntaxes/Packages/Java/JavaDoc.sublime-syntax syntaxes/Packages/Java/JavaDoc.sublime-syntax
+index 422a6a9..40a741e 100644
+--- syntaxes/Packages/Java/JavaDoc.sublime-syntax
++++ syntaxes/Packages/Java/JavaDoc.sublime-syntax
+@@ -13,7 +13,7 @@ variables:
+ contexts:
+   prototype:
+     # https://docs.oracle.com/javase/7/docs/technotes/tools/windows/javadoc.html#leadingasterisks
+-    - match: ^\s*(\*)\s*(?!\s*@)
++    - match: ^\s*(\*)(?!/)\s*(?!\s*@)
+       captures:
+         1: punctuation.definition.comment.javadoc
+ 

assets/README.md

@@ -28,5 +28,5 @@ themes (`bat cache --clear`).
 
 The following files have been manually modified after converting from a `.tmLanguage` file:
 
-* `VimL.sublime-syntax` => added `.vimrc` file type.
+* `Dart.sublime-syntax` => removed `#regex.dart` include.
-* `Dart.sublime-syntax` => removed `#regex.dart` include,
+* `INI.sublime-syntax` => added `.hgrc` and `hgrc` file types.

assets/create.sh

@@ -2,4 +2,15 @@
 
 ASSET_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
+# Always remove the local cache to avoid any confusion
+bat cache --clear
+
+# TODO: Remove this (and the reverse part below) when
+# https://github.com/trishume/syntect/issues/160 has been fixed
+JAVADOC_FILE="${ASSET_DIR}/syntaxes/Packages/Java/JavaDoc.sublime-syntax"
+JAVADOC_PATCH="${ASSET_DIR}/JavaDoc.sublime-syntax.patch"
+patch "$JAVADOC_FILE" "$JAVADOC_PATCH"
+
 bat cache --init --blank --source="$ASSET_DIR" --target="$ASSET_DIR"
+
+patch -R "$JAVADOC_FILE" "$JAVADOC_PATCH"

assets/syntaxes/INI.sublime-syntax

@@ -15,6 +15,8 @@ file_extensions:
   - url
   - URL
   - .editorconfig
+  - .hgrc
+  - hgrc
 scope: source.ini
 contexts:
   main:

assets/syntaxes/Robot.sublime-syntax

@@ -0,0 +1,54 @@
+%YAML 1.2
+---
+# http://www.sublimetext.com/docs/3/syntax.html
+name: Robot Framework syntax highlighting.
+file_extensions:
+  - robot
+scope: source.robot
+contexts:
+  main:
+    - match: '\$\{(\d+|\d+\.\d*|0[bB][01]+|0[oO][0-7]+|0[xX][0-9a-fA-F]+)\}'
+      comment: "Robot Framework numbers, like ${1} or ${12.3}"
+      scope: constant.numeric.robot
+    - match: '(?i)(%\{[\w|\s]+\})'
+      comment: "Robot Framework environment variable, like %{USER}"
+      scope: variable.parameter.robot
+    - match: '((?<!\\)|(?<=\\\\))[$&]{'
+      comment: Robot Framework scalar and dictionary variables
+      push:
+        - meta_scope: entity.name.class
+        - match: '\}'
+          pop: true
+    - match: '((?<!\\)(@{)|(?<=\\\\)(@{))'
+      comment: Robot Framework list variables
+      push:
+        - meta_scope: entity.name.class
+        - match: '(}\[.+])|(})'
+          pop: true
+    - match: '(?i)^(\|\s*)?(\*{1,3} ?)(settings?|variables?|keywords?|test cases?)( ?\*{1,3})?(\s*\|)?'
+      comment: Robot Framework data tables
+      scope: string.robot.header
+    - match: '(?i)(^\|\s*)?\[?Documentation\]?\s+'
+      comment: Test case, keyword and settings table documentation
+      push:
+        - meta_scope: comment
+        - match: ^(?!\s*+\.\.\.)
+          pop: true
+    - match: '(^| {2,}|\t|\\| {1,})(?<!\\\\)#'
+      comment: Comment character
+      push:
+        - meta_scope: comment
+        - match: $
+          pop: true
+    - match: '(?i)\s+\[(Tags|Setup|Teardown|Template|Timeout|Arguments|Return)\]'
+      comment: Tests case and keyword settings
+      scope: storage.type
+    - match: (?i)^(\|\s*)?(Library|Resource|Test Timeout|Test Template|Test Teardown|Test Setup|Default Tags|Force Tags|Metadata|Variables|Suite Setup|Suite Teardown)(?:(  )|( \| ))
+      comment: Settings table settings, like Library
+      scope: constant.language
+    - match: '^(\|\s+)?(?!^\.{3})(?![\|$&])\S+'
+      comment: Keywords and test cases
+      push:
+        - meta_scope: keyword.control.robot
+        - match: '($|\||\s{2,})'
+          pop: true

assets/syntaxes/VimL.sublime-syntax

@@ -63,7 +63,7 @@ contexts:
     - match: \b(if|while|for|try|return|throw|end(if|for|while|try)?|au(g|group)|else(if|)?|do|in|catch|finally|:)\b
       scope: keyword.control.viml
   number_hex:
-    - match: "#[0-9a-f]{6}"
+    - match: "0x[0-9a-f]+"
       scope: constant.numeric.hex
   number_int:
     - match: '-?\d+'

build.rs

@@ -0,0 +1,26 @@
+#[macro_use]
+extern crate clap;
+
+use clap::Shell;
+use std::fs;
+
+include!("src/clap_app.rs");
+
+const BIN_NAME: &str = "bat";
+
+fn main() {
+    let outdir = std::env::var_os("SHELL_COMPLETIONS_DIR").or(std::env::var_os("OUT_DIR"));
+
+    let outdir = match outdir {
+        None => return,
+        Some(outdir) => outdir,
+    };
+
+    fs::create_dir_all(&outdir).unwrap();
+
+    let mut app = build_app(true);
+    app.gen_completions(BIN_NAME, Shell::Bash, &outdir);
+    app.gen_completions(BIN_NAME, Shell::Fish, &outdir);
+    app.gen_completions(BIN_NAME, Shell::Zsh, &outdir);
+    app.gen_completions(BIN_NAME, Shell::PowerShell, &outdir);
+}

ci/before_deploy.bash

@@ -27,6 +27,7 @@ pack() {
 
     # create a "staging" directory
     mkdir "$tempdir/$package_name"
+    mkdir "$tempdir/$package_name/autocomplete"
 
     # copying the main binary
     cp "target/$TARGET/release/$PROJECT_NAME" "$tempdir/$package_name/"
@@ -38,6 +39,11 @@ pack() {
     cp LICENSE-MIT "$tempdir/$package_name"
     cp LICENSE-APACHE "$tempdir/$package_name"
 
+    # various autocomplete
+    cp target/"$TARGET"/release/build/"$PROJECT_NAME"-*/out/"$PROJECT_NAME".bash "$tempdir/$package_name/autocomplete/${PROJECT_NAME}.bash-completion"
+    cp target/"$TARGET"/release/build/"$PROJECT_NAME"-*/out/"$PROJECT_NAME".fish "$tempdir/$package_name/autocomplete"
+    cp target/"$TARGET"/release/build/"$PROJECT_NAME"-*/out/_"$PROJECT_NAME" "$tempdir/$package_name/autocomplete"
+
     # archiving
     pushd "$tempdir"
     tar czf "$out_dir/$package_name.tar.gz" "$package_name"/*

ci/before_deploy.ps1

@@ -11,6 +11,7 @@ Set-Location $STAGE
 $ZIP = "$SRC_DIR\$($Env:CRATE_NAME)-$($Env:APPVEYOR_REPO_TAG_NAME)-$($Env:TARGET).zip"
 
 Copy-Item "$SRC_DIR\target\release\bat.exe" '.\'
+Copy-Item $SRC_DIR\target\release\build\bat-*\out\_bat.ps1 '.\'
 
 # readme and license
 Copy-Item $SRC_DIR\README.md '.\'

doc/bat.1

@@ -21,6 +21,12 @@ names and file extensions.
 .IP
 Display a list of supported languages for syntax highlighting.
 .HP
+\fB\-m\fR, \fB\-\-map\-syntax\fR <from:to>...
+.IP
+Map a file extension or file name to an existing syntax. For example, to highlight
+*.conf files with the INI syntax, use '\-m conf:ini'. To highlight files named
+\&'.myignore' with the Git Ignore syntax, use '\-m .myignore:gitignore'.
+.HP
 \fB\-\-theme\fR <theme>
 .IP
 Set the theme for syntax highlighting. Use '\-\-list\-themes' to see all
@@ -41,7 +47,7 @@ theme, export the BAT_STYLE environment variable (e.g.: export
 BAT_STYLE="numbers"). [possible values: auto, full, plain, changes, header,
 grid, numbers]
 .HP
-\fB\-p\fR
+\fB\-p\fR, \fB\-\-plain\fR
 .IP
 Only show plain style, no decorations. This is an alias for '\-\-style=plain'
 .HP
@@ -64,38 +70,34 @@ prints lines 40 to the end of the file
 .HP
 \fB\-\-color\fR <when>
 .IP
-Specify when to use colored output. The automatic mode only enables colors if
+Specify when to use colored output. The automatic mode only enables colors if an
-an interactive terminal is detected. [default: auto]  [possible values: auto,
+interactive terminal is detected. Possible values: *auto*, never, always.
-never, always]
 .HP
 \fB\-\-decorations\fR <when>
 .IP
-Specify when to use the decorations that have been specified via '\-\-style'.
+Specify when to use the decorations that have been specified via '\-\-style'. The
-The automatic mode only enables decorations if an interactive terminal is
+automatic mode only enables decorations if an interactive terminal is detected. Possible
-detected. [default: auto]  [possible values: auto, never, always]
+values: *auto*, never, always.
 .HP
 \fB\-\-paging\fR <when>
 .IP
-Specify when to use the pager. To control which pager is used, set the PAGER
+Specify when to use the pager. To control which pager is used, set the PAGER or
-or BAT_PAGER environment variables (the latter takes precedence). The default
+BAT_PAGER environment variables (the latter takes precedence). The default pager is
-pager is 'less'. To disable the pager permanently, set BAT_PAGER to an empty
+\&'less'. To disable the pager permanently, set BAT_PAGER to an empty string. Possible
-string. [default: auto]  [possible values: auto, never, always]
+values: *auto*, never, always.
 .HP
 \fB\-\-wrap\fR <mode>
-.TP
-Specify the text\-wrapping mode. [default: auto]
-[possible values: auto,
 .IP
-never, character]
+Specify the text\-wrapping mode (*auto*, never, character).
 .HP
-\fB\-u\fR
+\fB\-\-tabs\fR <T>
 .IP
-This option exists for POSIX\-compliance reasons ('u' is for 'unbuffered'). The
+Set the tab width to T spaces. Use a width of 0 to pass tabs through directly
-output is always unbuffered \- this option is simply ignored.
 .HP
-\fB\-\-tabs\fR <tabs>
+\fB\-u\fR, \fB\-\-unbuffered\fR
 .IP
-Sets the tab width. Use a width of 0 to pass tabs through directly
+This option exists for POSIX\-compliance reasons ('u' is for 'unbuffered'). The output is
+always unbuffered \- this option is simply ignored.
 .HP
 \fB\-h\fR, \fB\-\-help\fR
 .IP

src/app.rs

@@ -1,11 +1,12 @@
 use std::collections::HashSet;
 use std::env;
-use std::path::Path;
 use std::str::FromStr;
 
 use atty::{self, Stream};
 
-use clap::{App as ClapApp, AppSettings, Arg, ArgGroup, ArgMatches, SubCommand};
+use clap::ArgMatches;
+use clap_app;
+use wild;
 
 use console::Term;
 
@@ -13,9 +14,13 @@ use console::Term;
 use ansi_term;
 
 use assets::BAT_THEME_DEFAULT;
+use config::{get_args_from_config_file, get_args_from_env_var};
 use errors::*;
+use inputfile::InputFile;
 use line_range::LineRange;
 use style::{OutputComponent, OutputComponents, OutputWrap};
+use syntax_mapping::SyntaxMapping;
+use util::transpose;
 
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub enum PagingMode {
@@ -24,13 +29,6 @@ pub enum PagingMode {
     Never,
 }
 
-#[derive(Debug, Clone, Copy, PartialEq)]
-pub enum InputFile<'a> {
-    StdIn,
-    Ordinary(&'a str),
-    ThemePreviewFile,
-}
-
 #[derive(Clone)]
 pub struct Config<'a> {
     /// List of files to print
@@ -69,6 +67,9 @@ pub struct Config<'a> {
 
     /// The syntax highlighting theme
     pub theme: String,
+
+    /// File extension/name mappings
+    pub syntax_mapping: SyntaxMapping,
 }
 
 fn is_truecolor_terminal() -> bool {
@@ -77,284 +78,49 @@ fn is_truecolor_terminal() -> bool {
         .unwrap_or(false)
 }
 
-/// Helper function that should might appear in Rust stable at some point
-/// (https://doc.rust-lang.org/stable/std/option/enum.Option.html#method.transpose)
-fn transpose<T>(opt: Option<Result<T>>) -> Result<Option<T>> {
-    opt.map_or(Ok(None), |res| res.map(Some))
-}
-
 pub struct App {
     pub matches: ArgMatches<'static>,
     interactive_output: bool,
 }
 
 impl App {
-    pub fn new() -> Self {
+    pub fn new() -> Result<Self> {
         #[cfg(windows)]
         let _ = ansi_term::enable_ansi_support();
 
         let interactive_output = atty::is(Stream::Stdout);
 
-        App {
+        Ok(App {
-            matches: Self::matches(interactive_output),
+            matches: Self::matches(interactive_output)?,
             interactive_output,
-        }
+        })
     }
 
-    fn matches(interactive_output: bool) -> ArgMatches<'static> {
+    fn matches(interactive_output: bool) -> Result<ArgMatches<'static>> {
-        let clap_color_setting = if interactive_output {
+        let args = if wild::args_os().nth(1) == Some("cache".into())
-            AppSettings::ColoredHelp
+            || wild::args_os().any(|arg| arg == "--no-config")
+        {
+            // Skip the arguments in bats config file
+
+            wild::args_os().collect::<Vec<_>>()
         } else {
-            AppSettings::ColorNever
+            let mut cli_args = wild::args_os();
+
+            // Read arguments from bats config file
+            let mut args = get_args_from_env_var()
+                .unwrap_or_else(|| get_args_from_config_file())
+                .chain_err(|| "Could not parse configuration file")?;
+
+            // Put the zero-th CLI argument (program name) first
+            args.insert(0, cli_args.next().unwrap());
+
+            // .. and the rest at the end
+            cli_args.for_each(|a| args.push(a));
+
+            args
         };
 
-        // Check if the current directory contains a file name cache, if it does
+        Ok(clap_app::build_app(interactive_output).get_matches_from(args))
-        // do not make the arguements for subcommand 'cache' required.
-        let arg_group_required = !Path::new("cache").exists();
-
-        ClapApp::new(crate_name!())
-            .version(crate_version!())
-            .global_setting(clap_color_setting)
-            .global_setting(AppSettings::DeriveDisplayOrder)
-            .global_setting(AppSettings::UnifiedHelpMessage)
-            .global_setting(AppSettings::NextLineHelp)
-            .setting(AppSettings::InferSubcommands)
-            .setting(AppSettings::ArgsNegateSubcommands)
-            .setting(AppSettings::DisableHelpSubcommand)
-            .setting(AppSettings::VersionlessSubcommands)
-            .max_term_width(90)
-            .about(
-                "A cat(1) clone with wings.\n\n\
-                 Use '--help' instead of '-h' to see a more detailed version of the help text.",
-            ).long_about("A cat(1) clone with syntax highlighting and Git integration.")
-            .arg(
-                Arg::with_name("FILE")
-                    .help("File(s) to print / concatenate. Use '-' for standard input.")
-                    .long_help(
-                        "File(s) to print / concatenate. Use a dash ('-') or no argument at all \
-                         to read from standard input.",
-                    ).multiple(true)
-                    .empty_values(false),
-            )
-            .arg(
-                Arg::with_name("language")
-                    .short("l")
-                    .long("language")
-                    .overrides_with("language")
-                    .help("Set the language for syntax highlighting.")
-                    .long_help(
-                        "Explicitly set the language for syntax highlighting. The language can be \
-                        specified as a name (like 'C++' or 'LaTeX') or possible file extension \
-                        (like 'cpp', 'hpp' or 'md'). Use '--list-languages' to show all supported \
-                        language names and file extensions."
-                    ).takes_value(true),
-            ).arg(
-            Arg::with_name("list-languages")
-                .long("list-languages")
-                .conflicts_with("list-themes")
-                .help("Display all supported languages.")
-                .long_help("Display a list of supported languages for syntax highlighting."),
-        ).arg(
-            Arg::with_name("theme")
-                .long("theme")
-                .overrides_with("theme")
-                .takes_value(true)
-                .help("Set the color theme for syntax highlighting.")
-                .long_help(
-                    "Set the theme for syntax highlighting. Use '--list-themes' to \
-                         see all available themes. To set a default theme, export the \
-                         BAT_THEME environment variable (e.g.: export \
-                         BAT_THEME=\"TwoDark\").",
-                ),
-        ).arg(
-            Arg::with_name("list-themes")
-                .long("list-themes")
-                .help("Display all supported highlighting themes.")
-                .long_help("Display a list of supported themes for syntax highlighting."),
-        ).arg(
-            Arg::with_name("style")
-                .long("style")
-                .value_name("style-components")
-                .use_delimiter(true)
-                .takes_value(true)
-                .possible_values(&[
-                    "auto", "full", "plain", "changes", "header", "grid", "numbers",
-                ])
-                .help("Comma-separated list of style elements to display.")
-                .long_help(
-                    "Configure which elements (line numbers, file headers, grid \
-                         borders, Git modifications, ..) to display in addition to the \
-                         file contents. The argument is a comma-separated list of \
-                         components to display (e.g. 'numbers,changes,grid') or a \
-                         pre-defined style ('full'). To set a default theme, export the \
-                         BAT_STYLE environment variable (e.g.: export BAT_STYLE=\"numbers\").",
-                ),
-        ).arg(
-            Arg::with_name("plain")
-                .overrides_with("plain")
-                .short("p")
-                .long("plain")
-                .conflicts_with("style")
-                .conflicts_with("number")
-                .help("Show plain style (alias for '--style=plain').")
-                .long_help(
-                    "Only show plain style, no decorations. This is an alias for \
-                         '--style=plain'",
-                ),
-        ).arg(
-            Arg::with_name("number")
-                .long("number")
-                .overrides_with("number")
-                .short("n")
-                .conflicts_with("style")
-                .help("Show line numbers (alias for '--style=numbers').")
-                .long_help(
-                    "Only show line numbers, no other decorations. This is an alias for \
-                         '--style=numbers'",
-                ),
-        ).arg(
-            Arg::with_name("line-range")
-                .long("line-range")
-                .overrides_with("line-range")
-                .takes_value(true)
-                .value_name("N:M")
-                .help("Only print the lines from N to M.")
-                .long_help(
-                    "Only print the specified range of lines for each file. \
-                         For example:\n  \
-                         '--line-range 30:40' prints lines 30 to 40\n  \
-                         '--line-range :40' prints lines 1 to 40\n  \
-                         '--line-range 40:' prints lines 40 to the end of the file",
-                ),
-        ).arg(
-            Arg::with_name("color")
-                .long("color")
-                .overrides_with("color")
-                .takes_value(true)
-                .value_name("when")
-                .possible_values(&["auto", "never", "always"])
-                .default_value("auto")
-                .help("When to use colors.")
-                .long_help("Specify when to use colored output. The automatic mode \
-                                only enables colors if an interactive terminal is detected."),
-        ).arg(
-            Arg::with_name("decorations")
-                .long("decorations")
-                .overrides_with("decorations")
-                .takes_value(true)
-                .value_name("when")
-                .possible_values(&["auto", "never", "always"])
-                .default_value("auto")
-                .help("When to show the decorations specified by '--style'.")
-                .long_help("Specify when to use the decorations that have been specified \
-                                via '--style'. The automatic mode only enables decorations if \
-                                an interactive terminal is detected."),
-        ).arg(
-            Arg::with_name("paging")
-                .long("paging")
-                .overrides_with("paging")
-                .takes_value(true)
-                .value_name("when")
-                .possible_values(&["auto", "never", "always"])
-                .default_value("auto")
-                .help("Specify when to use the pager.")
-                .long_help("Specify when to use the pager. To control which pager \
-                                is used, set the PAGER or BAT_PAGER environment \
-                                variables (the latter takes precedence). The default \
-                                pager is 'less'. To disable the pager permanently, set \
-                                BAT_PAGER to an empty string."),
-        ).arg(
-            Arg::with_name("wrap")
-                .long("wrap")
-                .overrides_with("wrap")
-                .takes_value(true)
-                .value_name("mode")
-                .possible_values(&["auto", "never", "character"])
-                .default_value("auto")
-                .help("Specify the text-wrapping mode.")
-                .long_help("Specify the text-wrapping mode."),
-        ).arg(
-            Arg::with_name("unbuffered")
-                .short("u")
-                .hidden_short_help(true)
-                .long_help(
-                    "This option exists for POSIX-compliance reasons ('u' is for \
-                         'unbuffered'). The output is always unbuffered - this option \
-                         is simply ignored.",
-                ),
-        ).arg(
-            Arg::with_name("tabs")
-                .long("tabs")
-                .takes_value(true)
-                .value_name("tabs")
-                .validator(
-                    |t| t.parse::<u32>()
-                        .map_err(|_t| "must be a number")
-                        .map(|_t| ()) // Convert to Result<(), &str>
-                        .map_err(|e| e.to_string()) // Convert to Result<(), String>
-                )
-                .help("Sets the tab width.")
-                .long_help("Sets the tab width. Use a width of 0 to pass tabs through \
-                        directly"),
-        ).arg(
-            Arg::with_name("terminal-width")
-                .long("terminal-width")
-                .takes_value(true)
-                .value_name("width")
-                .hidden(true)
-                .help("Set the width of the terminal"),
-        ).subcommand(
-            SubCommand::with_name("cache")
-                .about("Modify the syntax-definition and theme cache")
-                .arg(
-                    Arg::with_name("init")
-                        .long("init")
-                        .short("i")
-                        .help("Initialize the syntax/theme cache.")
-                        .long_help(
-                            "Initialize the syntax/theme cache by loading from the \
-                                 source directory (default: the configuration directory).",
-                        ),
-                ).arg(
-                Arg::with_name("clear")
-                    .long("clear")
-                    .short("c")
-                    .help("Remove the cached syntax definitions and themes."),
-            ).arg(
-                Arg::with_name("config-dir")
-                    .long("config-dir")
-                    .short("d")
-                    .help("Show bat's configuration directory."),
-            ).group(
-                ArgGroup::with_name("cache-actions")
-                    .args(&["init", "clear", "config-dir"])
-                    .required(arg_group_required),
-            ).arg(
-                Arg::with_name("source")
-                    .long("source")
-                    .requires("init")
-                    .takes_value(true)
-                    .value_name("dir")
-                    .help("Use a different directory to load syntaxes and themes from."),
-            ).arg(
-                Arg::with_name("target")
-                    .long("target")
-                    .requires("init")
-                    .takes_value(true)
-                    .value_name("dir")
-                    .help(
-                        "Use a different directory to store the cached syntax and theme set.",
-                    ),
-            ).arg(
-                Arg::with_name("blank")
-                    .long("blank")
-                    .requires("init")
-                    .help("Create completely new syntax and theme sets \
-                                   (instead of appending to the default sets).")
-            ),
-        ).help_message("Print this help message.")
-            .version_message("Show version information.")
-            .get_matches()
     }
 
     pub fn config(&self) -> Result<Config> {
@@ -364,24 +130,40 @@ impl App {
         let paging_mode = match self.matches.value_of("paging") {
             Some("always") => PagingMode::Always,
             Some("never") => PagingMode::Never,
-            Some("auto") | _ => if files.contains(&InputFile::StdIn) {
+            Some("auto") | _ => {
-                // If we are reading from stdin, only enable paging if we write to an
+                if files.contains(&InputFile::StdIn) {
-                // interactive terminal and if we do not *read* from an interactive
+                    // If we are reading from stdin, only enable paging if we write to an
-                // terminal.
+                    // interactive terminal and if we do not *read* from an interactive
-                if self.interactive_output && !atty::is(Stream::Stdin) {
+                    // terminal.
-                    PagingMode::QuitIfOneScreen
+                    if self.interactive_output && !atty::is(Stream::Stdin) {
+                        PagingMode::QuitIfOneScreen
+                    } else {
+                        PagingMode::Never
+                    }
                 } else {
-                    PagingMode::Never
+                    if self.interactive_output {
+                        PagingMode::QuitIfOneScreen
+                    } else {
+                        PagingMode::Never
+                    }
                 }
-            } else {
+            }
-                if self.interactive_output {
-                    PagingMode::QuitIfOneScreen
-                } else {
-                    PagingMode::Never
-                }
-            },
         };
 
+        let mut syntax_mapping = SyntaxMapping::new();
+
+        if let Some(values) = self.matches.values_of("map-syntax") {
+            for from_to in values {
+                let parts: Vec<_> = from_to.split(":").collect();
+
+                if parts.len() != 2 {
+                    return Err("Invalid syntax mapping. The format of the -m/--map-syntax option is 'from:to'.".into());
+                }
+
+                syntax_mapping.insert(parts[0].into(), parts[1].into());
+            }
+        }
+
         Ok(Config {
             true_color: is_truecolor_terminal(),
             language: self.matches.value_of("language"),
@@ -393,11 +175,13 @@ impl App {
                 match self.matches.value_of("wrap") {
                     Some("character") => OutputWrap::Character,
                     Some("never") => OutputWrap::None,
-                    Some("auto") | _ => if output_components.plain() {
+                    Some("auto") | _ => {
-                        OutputWrap::None
+                        if output_components.plain() {
-                    } else {
+                            OutputWrap::None
-                        OutputWrap::Character
+                        } else {
-                    },
+                            OutputWrap::Character
+                        }
+                    }
                 }
             },
             colored_output: match self.matches.value_of("color") {
@@ -436,6 +220,7 @@ impl App {
                 .unwrap_or(String::from(BAT_THEME_DEFAULT)),
             line_range: transpose(self.matches.value_of("line-range").map(LineRange::from))?,
             output_components,
+            syntax_mapping,
         })
     }
 
@@ -450,8 +235,10 @@ impl App {
                         } else {
                             InputFile::Ordinary(filename)
                         }
-                    }).collect()
+                    })
-            }).unwrap_or_else(|| vec![InputFile::StdIn])
+                    .collect()
+            })
+            .unwrap_or_else(|| vec![InputFile::StdIn])
     }
 
     fn output_components(&self) -> Result<OutputComponents> {

src/assets.rs

@@ -1,22 +1,18 @@
-use directories::ProjectDirs;
-use errors::*;
 use std::borrow::Cow;
 use std::collections::BTreeMap;
 use std::fs::{self, File};
+use std::io::BufReader;
 use std::path::{Path, PathBuf};
+
 use syntect::dumps::{dump_to_file, from_binary, from_reader};
 use syntect::highlighting::{Theme, ThemeSet};
-use syntect::parsing::{SyntaxDefinition, SyntaxSet};
+use syntect::parsing::{SyntaxReference, SyntaxSet, SyntaxSetBuilder};
 
-#[cfg(unix)]
+use dirs::PROJECT_DIRS;
-use std::os::unix::fs::FileTypeExt;
 
-use app::InputFile;
+use errors::*;
-
+use inputfile::{InputFile, InputFileReader};
-lazy_static! {
+use syntax_mapping::SyntaxMapping;
-    static ref PROJECT_DIRS: ProjectDirs =
-        ProjectDirs::from("", "", crate_name!()).expect("Could not get home directory");
-}
 
 pub const BAT_THEME_DEFAULT: &str = "Monokai Extended";
 
@@ -30,31 +26,20 @@ impl HighlightingAssets {
         Self::from_cache().unwrap_or_else(|_| Self::from_binary())
     }
 
-    fn empty() -> Self {
-        let mut syntax_set = SyntaxSet::new();
-        syntax_set.load_plain_text_syntax();
-
-        let theme_set = ThemeSet {
-            themes: BTreeMap::new(),
-        };
-        HighlightingAssets {
-            syntax_set,
-            theme_set,
-        }
-    }
-
     pub fn from_files(dir: Option<&Path>, start_empty: bool) -> Result<Self> {
         let source_dir = dir.unwrap_or_else(|| PROJECT_DIRS.config_dir());
 
-        let mut assets = if start_empty {
+        let mut theme_set = if start_empty {
-            Self::empty()
+            ThemeSet {
+                themes: BTreeMap::new(),
+            }
         } else {
-            Self::from_binary_unlinked()
+            Self::get_integrated_themeset()
         };
 
         let theme_dir = source_dir.join("themes");
 
-        let res = extend_theme_set(&mut assets.theme_set, &theme_dir);
+        let res = theme_set.add_from_folder(&theme_dir);
         if !res.is_ok() {
             println!(
                 "No themes were found in '{}', using the default set",
@@ -62,9 +47,17 @@ impl HighlightingAssets {
             );
         }
 
+        let mut syntax_set_builder = if start_empty {
+            let mut builder = SyntaxSetBuilder::new();
+            builder.add_plain_text_syntax();
+            builder
+        } else {
+            Self::get_integrated_syntaxset().into_builder()
+        };
+
         let syntax_dir = source_dir.join("syntaxes");
         if syntax_dir.exists() {
-            assets.syntax_set.load_syntaxes(syntax_dir, true)?;
+            syntax_set_builder.add_from_folder(syntax_dir, true)?;
         } else {
             println!(
                 "No syntaxes were found in '{}', using the default set.",
@@ -72,7 +65,10 @@ impl HighlightingAssets {
             );
         }
 
-        Ok(assets)
+        Ok(HighlightingAssets {
+            syntax_set: syntax_set_builder.build(),
+            theme_set,
+        })
     }
 
     fn from_cache() -> Result<Self> {
@@ -83,9 +79,8 @@ impl HighlightingAssets {
                 syntax_set_path().to_string_lossy()
             )
         })?;
-        let mut syntax_set: SyntaxSet =
+        let syntax_set: SyntaxSet = from_reader(BufReader::new(syntax_set_file))
-            from_reader(syntax_set_file).chain_err(|| "Could not parse cached syntax set")?;
+            .chain_err(|| "Could not parse cached syntax set")?;
-        syntax_set.link_syntaxes();
 
         let theme_set_file = File::open(&theme_set_path).chain_err(|| {
             format!(
@@ -93,8 +88,8 @@ impl HighlightingAssets {
                 theme_set_path.to_string_lossy()
             )
         })?;
-        let theme_set: ThemeSet =
+        let theme_set: ThemeSet = from_reader(BufReader::new(theme_set_file))
-            from_reader(theme_set_file).chain_err(|| "Could not parse cached theme set")?;
+            .chain_err(|| "Could not parse cached theme set")?;
 
         Ok(HighlightingAssets {
             syntax_set,
@@ -102,9 +97,17 @@ impl HighlightingAssets {
         })
     }
 
-    fn from_binary_unlinked() -> Self {
+    fn get_integrated_syntaxset() -> SyntaxSet {
-        let syntax_set: SyntaxSet = from_binary(include_bytes!("../assets/syntaxes.bin"));
+        from_binary(include_bytes!("../assets/syntaxes.bin"))
-        let theme_set: ThemeSet = from_binary(include_bytes!("../assets/themes.bin"));
+    }
+
+    fn get_integrated_themeset() -> ThemeSet {
+        from_binary(include_bytes!("../assets/themes.bin"))
+    }
+
+    fn from_binary() -> Self {
+        let syntax_set = Self::get_integrated_syntaxset();
+        let theme_set = Self::get_integrated_themeset();
 
         HighlightingAssets {
             syntax_set,
@@ -112,12 +115,6 @@ impl HighlightingAssets {
         }
     }
 
-    fn from_binary() -> Self {
-        let mut assets = Self::from_binary_unlinked();
-        assets.syntax_set.link_syntaxes();
-        assets
-    }
-
     pub fn save(&self, dir: Option<&Path>) -> Result<()> {
         let target_dir = dir.unwrap_or_else(|| PROJECT_DIRS.cache_dir());
         let _ = fs::create_dir(target_dir);
@@ -166,29 +163,40 @@ impl HighlightingAssets {
         }
     }
 
-    pub fn get_syntax(&self, language: Option<&str>, filename: InputFile) -> &SyntaxDefinition {
+    pub fn get_syntax(
+        &self,
+        language: Option<&str>,
+        filename: InputFile,
+        reader: &mut InputFileReader,
+        mapping: &SyntaxMapping,
+    ) -> &SyntaxReference {
         let syntax = match (language, filename) {
             (Some(language), _) => self.syntax_set.find_syntax_by_token(language),
             (None, InputFile::Ordinary(filename)) => {
-                #[cfg(not(unix))]
+                let path = Path::new(filename);
-                let may_read_from_file = true;
+                let file_name = path.file_name().and_then(|n| n.to_str()).unwrap_or("");
+                let extension = path.extension().and_then(|x| x.to_str()).unwrap_or("");
 
-                // Do not peek at the file (to determine the syntax) if it is a FIFO because they can
+                let file_name = mapping.replace(file_name);
-                // only be read once.
+                let extension = mapping.replace(extension);
-                #[cfg(unix)]
-                let may_read_from_file = !fs::metadata(filename)
-                    .map(|m| m.file_type().is_fifo())
-                    .unwrap_or(false);
 
-                if may_read_from_file {
+                let ext_syntax = self
-                    self.syntax_set
+                    .syntax_set
-                        .find_syntax_for_file(filename)
+                    .find_syntax_by_extension(&file_name)
-                        .unwrap_or(None)
+                    .or_else(|| self.syntax_set.find_syntax_by_extension(&extension));
+                let line_syntax = if ext_syntax.is_none() {
+                    String::from_utf8(reader.first_line.clone())
+                        .ok()
+                        .and_then(|l| self.syntax_set.find_syntax_by_first_line(&l))
                 } else {
                     None
-                }
+                };
+                let syntax = ext_syntax.or(line_syntax);
+                syntax
             }
-            (None, InputFile::StdIn) => None,
+            (None, InputFile::StdIn) => String::from_utf8(reader.first_line.clone())
+                .ok()
+                .and_then(|l| self.syntax_set.find_syntax_by_first_line(&l)),
             (_, InputFile::ThemePreviewFile) => self.syntax_set.find_syntax_by_name("Rust"),
         };
 
@@ -196,21 +204,6 @@ impl HighlightingAssets {
     }
 }
 
-// TODO: this function will soon be part of syntect's `ThemeSet`.
-fn extend_theme_set<P: AsRef<Path>>(theme_set: &mut ThemeSet, folder: P) -> Result<()> {
-    let paths = ThemeSet::discover_theme_paths(folder)?;
-    for p in &paths {
-        let theme = ThemeSet::get_theme(p)?;
-        let basename = p
-            .file_stem()
-            .and_then(|x| x.to_str())
-            .ok_or("Could not get theme basename")?;
-        theme_set.themes.insert(basename.to_owned(), theme);
-    }
-
-    Ok(())
-}
-
 fn theme_set_path() -> PathBuf {
     PROJECT_DIRS.cache_dir().join("themes.bin")
 }

src/clap_app.rs

@@ -0,0 +1,332 @@
+use clap::{App as ClapApp, AppSettings, Arg, ArgGroup, SubCommand};
+use std::path::Path;
+
+pub fn build_app(interactive_output: bool) -> ClapApp<'static, 'static> {
+    let clap_color_setting = if interactive_output {
+        AppSettings::ColoredHelp
+    } else {
+        AppSettings::ColorNever
+    };
+
+    // Check if the current directory contains a file name cache, if it does
+    // do not make the arguements for subcommand 'cache' required.
+    let arg_group_required = !Path::new("cache").exists();
+
+    ClapApp::new(crate_name!())
+        .version(crate_version!())
+        .global_setting(clap_color_setting)
+        .global_setting(AppSettings::DeriveDisplayOrder)
+        .global_setting(AppSettings::UnifiedHelpMessage)
+        .global_setting(AppSettings::HidePossibleValuesInHelp)
+        .setting(AppSettings::InferSubcommands)
+        .setting(AppSettings::ArgsNegateSubcommands)
+        .setting(AppSettings::DisableHelpSubcommand)
+        .setting(AppSettings::VersionlessSubcommands)
+        .max_term_width(100)
+        .about(
+            "A cat(1) clone with wings.\n\n\
+             Use '--help' instead of '-h' to see a more detailed version of the help text.",
+        )
+        .long_about("A cat(1) clone with syntax highlighting and Git integration.")
+        .arg(
+            Arg::with_name("FILE")
+                .help("File(s) to print / concatenate. Use '-' for standard input.")
+                .long_help(
+                    "File(s) to print / concatenate. Use a dash ('-') or no argument at all \
+                     to read from standard input.",
+                )
+                .multiple(true)
+                .empty_values(false),
+        )
+        .arg(
+            Arg::with_name("language")
+                .short("l")
+                .long("language")
+                .overrides_with("language")
+                .help("Set the language for syntax highlighting.")
+                .long_help(
+                    "Explicitly set the language for syntax highlighting. The language can be \
+                     specified as a name (like 'C++' or 'LaTeX') or possible file extension \
+                     (like 'cpp', 'hpp' or 'md'). Use '--list-languages' to show all supported \
+                     language names and file extensions.",
+                )
+                .takes_value(true),
+        )
+        .arg(
+            Arg::with_name("list-languages")
+                .long("list-languages")
+                .conflicts_with("list-themes")
+                .help("Display all supported languages.")
+                .long_help("Display a list of supported languages for syntax highlighting."),
+        )
+        .arg(
+            Arg::with_name("map-syntax")
+                .short("m")
+                .long("map-syntax")
+                .multiple(true)
+                .takes_value(true)
+                .number_of_values(1)
+                .value_name("from:to")
+                .help("Map a file extension or name to an existing syntax.")
+                .long_help(
+                    "Map a file extension or file name to an existing syntax. For example, \
+                     to highlight *.conf files with the INI syntax, use '-m conf:ini'. \
+                     To highlight files named '.myignore' with the Git Ignore syntax, use \
+                     '-m .myignore:gitignore'.",
+                )
+                .takes_value(true),
+        )
+        .arg(
+            Arg::with_name("theme")
+                .long("theme")
+                .overrides_with("theme")
+                .takes_value(true)
+                .help("Set the color theme for syntax highlighting.")
+                .long_help(
+                    "Set the theme for syntax highlighting. Use '--list-themes' to \
+                     see all available themes. To set a default theme, export the \
+                     BAT_THEME environment variable (e.g.: export \
+                     BAT_THEME=\"TwoDark\").",
+                ),
+        )
+        .arg(
+            Arg::with_name("list-themes")
+                .long("list-themes")
+                .help("Display all supported highlighting themes.")
+                .long_help("Display a list of supported themes for syntax highlighting."),
+        )
+        .arg(
+            Arg::with_name("style")
+                .long("style")
+                .value_name("style-components")
+                .use_delimiter(true)
+                .takes_value(true)
+                .possible_values(&[
+                    "auto", "full", "plain", "changes", "header", "grid", "numbers",
+                ])
+                .help(
+                    "Comma-separated list of style elements to display \
+                     (*auto*, full, plain, changes, header, grid, numbers).",
+                )
+                .long_help(
+                    "Configure which elements (line numbers, file headers, grid \
+                     borders, Git modifications, ..) to display in addition to the \
+                     file contents. The argument is a comma-separated list of \
+                     components to display (e.g. 'numbers,changes,grid') or a \
+                     pre-defined style ('full'). To set a default theme, export the \
+                     BAT_STYLE environment variable (e.g.: export BAT_STYLE=\"numbers\"). \
+                     Possible values: *auto*, full, plain, changes, header, grid, numbers.",
+                ),
+        )
+        .arg(
+            Arg::with_name("plain")
+                .overrides_with("plain")
+                .short("p")
+                .long("plain")
+                .conflicts_with("style")
+                .conflicts_with("number")
+                .help("Show plain style (alias for '--style=plain').")
+                .long_help(
+                    "Only show plain style, no decorations. This is an alias for \
+                     '--style=plain'",
+                ),
+        )
+        .arg(
+            Arg::with_name("number")
+                .long("number")
+                .overrides_with("number")
+                .short("n")
+                .conflicts_with("style")
+                .help("Show line numbers (alias for '--style=numbers').")
+                .long_help(
+                    "Only show line numbers, no other decorations. This is an alias for \
+                     '--style=numbers'",
+                ),
+        )
+        .arg(
+            Arg::with_name("line-range")
+                .long("line-range")
+                .overrides_with("line-range")
+                .takes_value(true)
+                .value_name("N:M")
+                .help("Only print the lines from N to M.")
+                .long_help(
+                    "Only print the specified range of lines for each file. \
+                     For example:\n  \
+                     '--line-range 30:40' prints lines 30 to 40\n  \
+                     '--line-range :40' prints lines 1 to 40\n  \
+                     '--line-range 40:' prints lines 40 to the end of the file",
+                ),
+        )
+        .arg(
+            Arg::with_name("color")
+                .long("color")
+                .overrides_with("color")
+                .takes_value(true)
+                .value_name("when")
+                .possible_values(&["auto", "never", "always"])
+                .hide_default_value(true)
+                .default_value("auto")
+                .help("When to use colors (*auto*, never, always).")
+                .long_help(
+                    "Specify when to use colored output. The automatic mode \
+                     only enables colors if an interactive terminal is detected. \
+                     Possible values: *auto*, never, always.",
+                ),
+        )
+        .arg(
+            Arg::with_name("decorations")
+                .long("decorations")
+                .overrides_with("decorations")
+                .takes_value(true)
+                .value_name("when")
+                .possible_values(&["auto", "never", "always"])
+                .default_value("auto")
+                .hide_default_value(true)
+                .help("When to show the decorations (*auto*, never, always).")
+                .long_help(
+                    "Specify when to use the decorations that have been specified \
+                     via '--style'. The automatic mode only enables decorations if \
+                     an interactive terminal is detected. Possible values: *auto*, never, always.",
+                ),
+        )
+        .arg(
+            Arg::with_name("paging")
+                .long("paging")
+                .overrides_with("paging")
+                .takes_value(true)
+                .value_name("when")
+                .possible_values(&["auto", "never", "always"])
+                .default_value("auto")
+                .hide_default_value(true)
+                .help("Specify when to use the pager (*auto*, never, always).")
+                .long_help(
+                    "Specify when to use the pager. To control which pager \
+                     is used, set the PAGER or BAT_PAGER environment \
+                     variables (the latter takes precedence). The default \
+                     pager is 'less'. To disable the pager permanently, set \
+                     BAT_PAGER to an empty string. \
+                     Possible values: *auto*, never, always.",
+                ),
+        )
+        .arg(
+            Arg::with_name("wrap")
+                .long("wrap")
+                .overrides_with("wrap")
+                .takes_value(true)
+                .value_name("mode")
+                .possible_values(&["auto", "never", "character"])
+                .default_value("auto")
+                .hide_default_value(true)
+                .help("Specify the text-wrapping mode (*auto*, never, character).")
+                .long_help("Specify the text-wrapping mode (*auto*, never, character)."),
+        )
+        .arg(
+            Arg::with_name("tabs")
+                .long("tabs")
+                .overrides_with("tabs")
+                .takes_value(true)
+                .value_name("T")
+                .validator(
+                    |t| {
+                        t.parse::<u32>()
+                            .map_err(|_t| "must be a number")
+                            .map(|_t| ()) // Convert to Result<(), &str>
+                            .map_err(|e| e.to_string())
+                    }, // Convert to Result<(), String>
+                )
+                .help("Set the tab width to T spaces.")
+                .long_help(
+                    "Set the tab width to T spaces. Use a width of 0 to pass tabs through \
+                     directly",
+                ),
+        )
+        .arg(
+            Arg::with_name("unbuffered")
+                .short("u")
+                .long("unbuffered")
+                .hidden_short_help(true)
+                .long_help(
+                    "This option exists for POSIX-compliance reasons ('u' is for \
+                     'unbuffered'). The output is always unbuffered - this option \
+                     is simply ignored.",
+                ),
+        )
+        .arg(
+            Arg::with_name("terminal-width")
+                .long("terminal-width")
+                .takes_value(true)
+                .value_name("width")
+                .hidden(true)
+                .help("Set the width of the terminal"),
+        )
+        .arg(
+            Arg::with_name("no-config")
+                .long("no-config")
+                .hidden(true)
+                .help("Do not use the configuration file"),
+        )
+        .arg(
+            Arg::with_name("config-file")
+                .long("config-file")
+                .conflicts_with("list-languages")
+                .conflicts_with("list-themes")
+                .hidden(true)
+                .help("Show path to the configuration file."),
+        )
+        .subcommand(
+            SubCommand::with_name("cache")
+                .about("Modify the syntax-definition and theme cache")
+                .arg(
+                    Arg::with_name("init")
+                        .long("init")
+                        .short("i")
+                        .help("Initialize the syntax/theme cache.")
+                        .long_help(
+                            "Initialize the syntax/theme cache by loading from the \
+                             source directory (default: the configuration directory).",
+                        ),
+                )
+                .arg(
+                    Arg::with_name("clear")
+                        .long("clear")
+                        .short("c")
+                        .help("Remove the cached syntax definitions and themes."),
+                )
+                .arg(
+                    Arg::with_name("config-dir")
+                        .long("config-dir")
+                        .short("d")
+                        .help("Show bat's configuration directory."),
+                )
+                .group(
+                    ArgGroup::with_name("cache-actions")
+                        .args(&["init", "clear", "config-dir"])
+                        .required(arg_group_required),
+                )
+                .arg(
+                    Arg::with_name("source")
+                        .long("source")
+                        .requires("init")
+                        .takes_value(true)
+                        .value_name("dir")
+                        .help("Use a different directory to load syntaxes and themes from."),
+                )
+                .arg(
+                    Arg::with_name("target")
+                        .long("target")
+                        .requires("init")
+                        .takes_value(true)
+                        .value_name("dir")
+                        .help(
+                            "Use a different directory to store the cached syntax and theme set.",
+                        ),
+                )
+                .arg(Arg::with_name("blank").long("blank").requires("init").help(
+                    "Create completely new syntax and theme sets \
+                     (instead of appending to the default sets).",
+                )),
+        )
+        .help_message("Print this help message.")
+        .version_message("Show version information.")
+}

src/config.rs

@@ -0,0 +1,101 @@
+use std::env;
+use std::ffi::OsString;
+use std::fs;
+use std::path::PathBuf;
+
+use shell_words;
+
+use dirs::PROJECT_DIRS;
+use util::transpose;
+
+pub fn config_file() -> PathBuf {
+    PROJECT_DIRS.config_dir().join("config")
+}
+
+pub fn get_args_from_config_file() -> Result<Vec<OsString>, shell_words::ParseError> {
+    Ok(transpose(
+        fs::read_to_string(config_file())
+            .ok()
+            .map(|content| get_args_from_str(&content)),
+    )?
+    .unwrap_or(vec![]))
+}
+
+pub fn get_args_from_env_var() -> Option<Result<Vec<OsString>, shell_words::ParseError>> {
+    env::var("BAT_OPTS").ok().map(|s| get_args_from_str(&s))
+}
+
+fn get_args_from_str<'a>(content: &'a str) -> Result<Vec<OsString>, shell_words::ParseError> {
+    let args_per_line = content
+        .split('\n')
+        .map(|line| line.trim())
+        .filter(|line| !line.is_empty())
+        .filter(|line| !line.starts_with("#"))
+        .map(|line| shell_words::split(line))
+        .collect::<Result<Vec<_>, _>>()?;
+
+    Ok(args_per_line
+        .iter()
+        .flatten()
+        .map(|line| line.into())
+        .collect())
+}
+
+#[test]
+fn empty() {
+    let args = get_args_from_str("").unwrap();
+    assert!(args.is_empty());
+}
+
+#[test]
+fn single() {
+    assert_eq!(vec!["--plain"], get_args_from_str("--plain").unwrap());
+}
+
+#[test]
+fn multiple() {
+    assert_eq!(
+        vec!["--plain", "--language=cpp"],
+        get_args_from_str("--plain --language=cpp").unwrap()
+    );
+}
+
+#[test]
+fn quotes() {
+    assert_eq!(
+        vec!["--theme", "Sublime Snazzy"],
+        get_args_from_str("--theme \"Sublime Snazzy\"").unwrap()
+    );
+}
+
+#[test]
+fn multi_line() {
+    let config = "
+    -p
+    --style numbers,changes
+
+    --color=always
+    ";
+    assert_eq!(
+        vec!["-p", "--style", "numbers,changes", "--color=always"],
+        get_args_from_str(config).unwrap()
+    );
+}
+
+#[test]
+fn comments() {
+    let config = "
+    # plain style
+    -p
+
+    # show line numbers and Git modifications
+    --style numbers,changes
+
+    # Always show ANSI colors
+    --color=always
+    ";
+    assert_eq!(
+        vec!["-p", "--style", "numbers,changes", "--color=always"],
+        get_args_from_str(config).unwrap()
+    );
+}

src/controller.rs

@@ -1,15 +1,13 @@
-use std::fs::File;
+use std::io::{self, Write};
-use std::io::{self, BufRead, BufReader, Write};
 
-use app::{Config, InputFile};
+use app::Config;
 use assets::HighlightingAssets;
 use errors::*;
+use inputfile::{InputFile, InputFileReader};
 use line_range::LineRange;
 use output::OutputType;
 use printer::{InteractivePrinter, Printer, SimplePrinter};
 
-const THEME_PREVIEW_FILE: &[u8] = include_bytes!("../assets/theme_preview.rs");
-
 pub struct Controller<'a> {
     config: &'a Config<'a>,
     assets: &'a HighlightingAssets,
@@ -21,22 +19,37 @@ impl<'b> Controller<'b> {
     }
 
     pub fn run(&self) -> Result<bool> {
-        let mut output_type = OutputType::from_mode(self.config.paging_mode);
+        let mut output_type = OutputType::from_mode(self.config.paging_mode)?;
         let writer = output_type.handle()?;
         let mut no_errors: bool = true;
 
-        for filename in &self.config.files {
+        let stdin = io::stdin();
-            let result = if self.config.loop_through {
-                let mut printer = SimplePrinter::new();
-                self.print_file(&mut printer, writer, *filename)
-            } else {
-                let mut printer = InteractivePrinter::new(&self.config, &self.assets, *filename);
-                self.print_file(&mut printer, writer, *filename)
-            };
 
-            if let Err(error) = result {
+        for input_file in &self.config.files {
-                handle_error(&error);
+            match input_file.get_reader(&stdin) {
-                no_errors = false;
+                Err(error) => {
+                    handle_error(&error);
+                    no_errors = false;
+                }
+                Ok(mut reader) => {
+                    let result = if self.config.loop_through {
+                        let mut printer = SimplePrinter::new();
+                        self.print_file(reader, &mut printer, writer, *input_file)
+                    } else {
+                        let mut printer = InteractivePrinter::new(
+                            &self.config,
+                            &self.assets,
+                            *input_file,
+                            &mut reader,
+                        );
+                        self.print_file(reader, &mut printer, writer, *input_file)
+                    };
+
+                    if let Err(error) = result {
+                        handle_error(&error);
+                        no_errors = false;
+                    }
+                }
             }
         }
 
@@ -45,30 +58,15 @@ impl<'b> Controller<'b> {
 
     fn print_file<'a, P: Printer>(
         &self,
+        reader: InputFileReader,
         printer: &mut P,
         writer: &mut Write,
-        filename: InputFile<'a>,
+        input_file: InputFile<'a>,
     ) -> Result<()> {
-        let stdin = io::stdin();
+        printer.print_header(writer, input_file)?;
-        {
+        self.print_file_ranges(printer, writer, reader, &self.config.line_range)?;
-            let reader: Box<BufRead> = match filename {
+        printer.print_footer(writer)?;
-                InputFile::StdIn => Box::new(stdin.lock()),
-                InputFile::Ordinary(filename) => {
-                    let file = File::open(filename)?;
 
-                    if file.metadata()?.is_dir() {
-                        return Err(format!("'{}' is a directory.", filename).into());
-                    }
-
-                    Box::new(BufReader::new(file))
-                }
-                InputFile::ThemePreviewFile => Box::new(THEME_PREVIEW_FILE),
-            };
-
-            printer.print_header(writer, filename)?;
-            self.print_file_ranges(printer, writer, reader, &self.config.line_range)?;
-            printer.print_footer(writer)?;
-        }
         Ok(())
     }
 
@@ -76,35 +74,33 @@ impl<'b> Controller<'b> {
         &self,
         printer: &mut P,
         writer: &mut Write,
-        mut reader: Box<BufRead + 'a>,
+        mut reader: InputFileReader,
         line_ranges: &Option<LineRange>,
     ) -> Result<()> {
         let mut line_buffer = Vec::new();
 
         let mut line_number: usize = 1;
 
-        while reader.read_until(b'\n', &mut line_buffer)? > 0 {
+        while reader.read_line(&mut line_buffer)? {
-            {
+            match line_ranges {
-                match line_ranges {
+                &Some(ref range) => {
-                    &Some(ref range) => {
+                    if line_number < range.lower {
-                        if line_number < range.lower {
+                        // Call the printer in case we need to call the syntax highlighter
-                            // Call the printer in case we need to call the syntax highlighter
+                        // for this line. However, set `out_of_range` to `true`.
-                            // for this line. However, set `out_of_range` to `true`.
+                        printer.print_line(true, writer, line_number, &line_buffer)?;
-                            printer.print_line(true, writer, line_number, &line_buffer)?;
+                    } else if line_number > range.upper {
-                        } else if line_number > range.upper {
+                        // no more lines in range, exit early
-                            // no more lines in range, exit early
+                        break;
-                            break;
+                    } else {
-                        } else {
-                            printer.print_line(false, writer, line_number, &line_buffer)?;
-                        }
-                    }
-                    &None => {
                         printer.print_line(false, writer, line_number, &line_buffer)?;
                     }
                 }
-
+                &None => {
-                line_number += 1;
+                    printer.print_line(false, writer, line_number, &line_buffer)?;
+                }
             }
+
+            line_number += 1;
             line_buffer.clear();
         }
         Ok(())

src/dirs.rs

@@ -0,0 +1,6 @@
+use directories::ProjectDirs;
+
+lazy_static! {
+    pub static ref PROJECT_DIRS: ProjectDirs =
+        ProjectDirs::from("", "", crate_name!()).expect("Could not get home directory");
+}

src/inputfile.rs

@@ -0,0 +1,131 @@
+use std::fs::File;
+use std::io::{self, BufRead, BufReader};
+
+use content_inspector::{self, ContentType};
+
+use errors::*;
+
+const THEME_PREVIEW_FILE: &[u8] = include_bytes!("../assets/theme_preview.rs");
+
+pub struct InputFileReader<'a> {
+    inner: Box<dyn BufRead + 'a>,
+    pub first_line: Vec<u8>,
+    pub content_type: ContentType,
+}
+
+impl<'a> InputFileReader<'a> {
+    fn new<R: BufRead + 'a>(mut reader: R) -> InputFileReader<'a> {
+        let mut first_line = vec![];
+        reader.read_until(b'\n', &mut first_line).ok();
+
+        let content_type = content_inspector::inspect(&first_line[..]);
+
+        if content_type == ContentType::UTF_16LE {
+            reader.read_until(0x00, &mut first_line).ok();
+        }
+
+        InputFileReader {
+            inner: Box::new(reader),
+            first_line,
+            content_type,
+        }
+    }
+
+    pub fn read_line(&mut self, buf: &mut Vec<u8>) -> io::Result<bool> {
+        if self.first_line.is_empty() {
+            let res = self.inner.read_until(b'\n', buf).map(|size| size > 0)?;
+
+            if self.content_type == ContentType::UTF_16LE {
+                self.inner.read_until(0x00, buf).ok();
+            }
+
+            Ok(res)
+        } else {
+            buf.append(&mut self.first_line);
+            Ok(true)
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum InputFile<'a> {
+    StdIn,
+    Ordinary(&'a str),
+    ThemePreviewFile,
+}
+
+impl<'a> InputFile<'a> {
+    pub fn get_reader(&self, stdin: &'a io::Stdin) -> Result<InputFileReader> {
+        match self {
+            InputFile::StdIn => Ok(InputFileReader::new(stdin.lock())),
+            InputFile::Ordinary(filename) => {
+                let file = File::open(filename)?;
+
+                if file.metadata()?.is_dir() {
+                    return Err(format!("'{}' is a directory.", filename).into());
+                }
+
+                Ok(InputFileReader::new(BufReader::new(file)))
+            }
+            InputFile::ThemePreviewFile => Ok(InputFileReader::new(THEME_PREVIEW_FILE)),
+        }
+    }
+}
+
+#[test]
+fn basic() {
+    let content = b"#!/bin/bash\necho hello";
+    let mut reader = InputFileReader::new(&content[..]);
+
+    assert_eq!(b"#!/bin/bash\n", &reader.first_line[..]);
+
+    let mut buffer = vec![];
+
+    let res = reader.read_line(&mut buffer);
+    assert!(res.is_ok());
+    assert_eq!(true, res.unwrap());
+    assert_eq!(b"#!/bin/bash\n", &buffer[..]);
+
+    buffer.clear();
+
+    let res = reader.read_line(&mut buffer);
+    assert!(res.is_ok());
+    assert_eq!(true, res.unwrap());
+    assert_eq!(b"echo hello", &buffer[..]);
+
+    buffer.clear();
+
+    let res = reader.read_line(&mut buffer);
+    assert!(res.is_ok());
+    assert_eq!(false, res.unwrap());
+    assert!(buffer.is_empty());
+}
+
+#[test]
+fn utf16le() {
+    let content = b"\xFF\xFE\x73\x00\x0A\x00\x64\x00";
+    let mut reader = InputFileReader::new(&content[..]);
+
+    assert_eq!(b"\xFF\xFE\x73\x00\x0A\x00", &reader.first_line[..]);
+
+    let mut buffer = vec![];
+
+    let res = reader.read_line(&mut buffer);
+    assert!(res.is_ok());
+    assert_eq!(true, res.unwrap());
+    assert_eq!(b"\xFF\xFE\x73\x00\x0A\x00", &buffer[..]);
+
+    buffer.clear();
+
+    let res = reader.read_line(&mut buffer);
+    assert!(res.is_ok());
+    assert_eq!(true, res.unwrap());
+    assert_eq!(b"\x64\x00", &buffer[..]);
+
+    buffer.clear();
+
+    let res = reader.read_line(&mut buffer);
+    assert!(res.is_ok());
+    assert_eq!(false, res.unwrap());
+    assert!(buffer.is_empty());
+}

src/main.rs

@@ -13,21 +13,31 @@ extern crate lazy_static;
 extern crate ansi_term;
 extern crate atty;
 extern crate console;
+extern crate content_inspector;
 extern crate directories;
+extern crate encoding;
 extern crate git2;
+extern crate shell_words;
 extern crate syntect;
+extern crate wild;
 
 mod app;
 mod assets;
+mod clap_app;
+mod config;
 mod controller;
 mod decorations;
 mod diff;
+mod dirs;
+mod inputfile;
 mod line_range;
 mod output;
 mod preprocessor;
 mod printer;
 mod style;
+mod syntax_mapping;
 mod terminal;
+mod util;
 
 use std::collections::HashSet;
 use std::io;
@@ -38,9 +48,11 @@ use std::process;
 use ansi_term::Colour::Green;
 use ansi_term::Style;
 
-use app::{App, Config, InputFile};
+use app::{App, Config};
 use assets::{clear_assets, config_dir, HighlightingAssets};
+use config::config_file;
 use controller::Controller;
+use inputfile::InputFile;
 use style::{OutputComponent, OutputComponents};
 
 mod errors {
@@ -186,7 +198,7 @@ fn run_controller(config: &Config) -> Result<bool> {
 /// Returns `Err(..)` upon fatal errors. Otherwise, returns `Some(true)` on full success and
 /// `Some(false)` if any intermediate errors occurred (were printed).
 fn run() -> Result<bool> {
-    let app = App::new();
+    let app = App::new()?;
 
     match app.matches.subcommand() {
         ("cache", Some(cache_matches)) => {
@@ -213,6 +225,10 @@ fn run() -> Result<bool> {
             } else if app.matches.is_present("list-themes") {
                 list_themes(&config)?;
 
+                Ok(true)
+            } else if app.matches.is_present("config-file") {
+                println!("{}", config_file().to_string_lossy());
+
                 Ok(true)
             } else {
                 run_controller(&config)

src/output.rs

@@ -4,6 +4,8 @@ use std::io::{self, Write};
 use std::path::PathBuf;
 use std::process::{Child, Command, Stdio};
 
+use shell_words;
+
 use app::PagingMode;
 use errors::*;
 
@@ -13,42 +15,52 @@ pub enum OutputType {
 }
 
 impl OutputType {
-    pub fn from_mode(mode: PagingMode) -> Self {
+    pub fn from_mode(mode: PagingMode) -> Result<Self> {
         use self::PagingMode::*;
-        match mode {
+        Ok(match mode {
-            Always => OutputType::try_pager(false),
+            Always => OutputType::try_pager(false)?,
-            QuitIfOneScreen => OutputType::try_pager(true),
+            QuitIfOneScreen => OutputType::try_pager(true)?,
             _ => OutputType::stdout(),
-        }
+        })
     }
 
     /// Try to launch the pager. Fall back to stdout in case of errors.
-    fn try_pager(quit_if_one_screen: bool) -> Self {
+    fn try_pager(quit_if_one_screen: bool) -> Result<Self> {
         let pager = env::var("BAT_PAGER")
             .or_else(|_| env::var("PAGER"))
             .unwrap_or(String::from("less"));
 
-        let less_path = PathBuf::from(&pager);
+        let pagerflags = shell_words::split(&pager)
-        let is_less = less_path.file_stem() == Some(&OsString::from("less"));
+            .chain_err(|| "Could not parse (BAT_)PAGER environment variable.")?;
 
-        let mut process = if is_less {
+        match pagerflags.split_first() {
-            let mut args = vec!["--RAW-CONTROL-CHARS", "--no-init"];
+            Some((pager_name, args)) => {
-            if quit_if_one_screen {
+                let pager_path = PathBuf::from(pager_name);
-                args.push("--quit-if-one-screen");
+                let is_less = pager_path.file_stem() == Some(&OsString::from("less"));
+
+                let mut process = if is_less {
+                    let mut p = Command::new(&pager_path);
+                    if args.is_empty() {
+                        p.args(vec!["--RAW-CONTROL-CHARS", "--no-init"]);
+                        if quit_if_one_screen {
+                            p.arg("--quit-if-one-screen");
+                        }
+                    }
+                    p.env("LESSCHARSET", "UTF-8");
+                    p
+                } else {
+                    Command::new(&pager_path)
+                };
+
+                Ok(process
+                    .args(args)
+                    .stdin(Stdio::piped())
+                    .spawn()
+                    .map(OutputType::Pager)
+                    .unwrap_or_else(|_| OutputType::stdout()))
             }
-
+            None => Ok(OutputType::stdout()),
-            let mut p = Command::new(&less_path);
+        }
-            p.args(&args).env("LESSCHARSET", "UTF-8");
-            p
-        } else {
-            Command::new(pager)
-        };
-
-        process
-            .stdin(Stdio::piped())
-            .spawn()
-            .map(OutputType::Pager)
-            .unwrap_or_else(|_| OutputType::stdout())
     }
 
     fn stdout() -> Self {

src/printer.rs

@@ -1,4 +1,3 @@
-use std::boxed::Box;
 use std::io::Write;
 use std::vec::Vec;
 
@@ -9,13 +8,20 @@ use console::AnsiCodeIterator;
 
 use syntect::easy::HighlightLines;
 use syntect::highlighting::Theme;
+use syntect::parsing::SyntaxSet;
 
-use app::{Config, InputFile};
+use content_inspector::ContentType;
+
+use encoding::all::{UTF_16BE, UTF_16LE};
+use encoding::{DecoderTrap, Encoding};
+
+use app::Config;
 use assets::HighlightingAssets;
 use decorations::{Decoration, GridBorderDecoration, LineChangesDecoration, LineNumberDecoration};
 use diff::get_git_diff;
 use diff::LineChanges;
 use errors::*;
+use inputfile::{InputFile, InputFileReader};
 use preprocessor::expand;
 use style::OutputWrap;
 use terminal::{as_terminal_escaped, to_ansi_color};
@@ -66,15 +72,22 @@ impl Printer for SimplePrinter {
 pub struct InteractivePrinter<'a> {
     colors: Colors,
     config: &'a Config<'a>,
-    decorations: Vec<Box<Decoration>>,
+    decorations: Vec<Box<dyn Decoration>>,
     panel_width: usize,
     ansi_prefix_sgr: String,
+    content_type: ContentType,
     pub line_changes: Option<LineChanges>,
-    highlighter: HighlightLines<'a>,
+    highlighter: Option<HighlightLines<'a>>,
+    syntax_set: &'a SyntaxSet,
 }
 
 impl<'a> InteractivePrinter<'a> {
-    pub fn new(config: &'a Config, assets: &'a HighlightingAssets, file: InputFile) -> Self {
+    pub fn new(
+        config: &'a Config,
+        assets: &'a HighlightingAssets,
+        file: InputFile,
+        reader: &mut InputFileReader,
+    ) -> Self {
         let theme = assets.get_theme(&config.theme);
 
         let colors = if config.colored_output {
@@ -84,7 +97,7 @@ impl<'a> InteractivePrinter<'a> {
         };
 
         // Create decorations.
-        let mut decorations: Vec<Box<Decoration>> = Vec::new();
+        let mut decorations: Vec<Box<dyn Decoration>> = Vec::new();
 
         if config.output_components.numbers() {
             decorations.push(Box::new(LineNumberDecoration::new(&colors)));
@@ -113,28 +126,36 @@ impl<'a> InteractivePrinter<'a> {
             panel_width = 0;
         }
 
-        // Get the Git modifications
+        let mut line_changes = None;
-        let line_changes = if config.output_components.changes() {
-            match file {
-                InputFile::Ordinary(filename) => get_git_diff(filename),
-                _ => None,
-            }
-        } else {
-            None
-        };
 
-        // Determine the type of syntax for highlighting
+        let highlighter = if reader.content_type.is_binary() {
-        let syntax = assets.get_syntax(config.language, file);
+            None
-        let highlighter = HighlightLines::new(syntax, theme);
+        } else {
+            // Get the Git modifications
+            line_changes = if config.output_components.changes() {
+                match file {
+                    InputFile::Ordinary(filename) => get_git_diff(filename),
+                    _ => None,
+                }
+            } else {
+                None
+            };
+
+            // Determine the type of syntax for highlighting
+            let syntax = assets.get_syntax(config.language, file, reader, &config.syntax_mapping);
+            Some(HighlightLines::new(syntax, theme))
+        };
 
         InteractivePrinter {
             panel_width,
             colors,
             config,
             decorations,
+            content_type: reader.content_type,
             ansi_prefix_sgr: String::new(),
             line_changes,
             highlighter,
+            syntax_set: &assets.syntax_set,
         }
     }
 
@@ -189,17 +210,34 @@ impl<'a> Printer for InteractivePrinter<'a> {
             _ => ("", "STDIN"),
         };
 
-        writeln!(handle, "{}{}", prefix, self.colors.filename.paint(name))?;
+        let mode = match self.content_type {
+            ContentType::BINARY => "   <BINARY>",
+            ContentType::UTF_16LE => "   <UTF-16LE>",
+            ContentType::UTF_16BE => "   <UTF-16BE>",
+            _ => "",
+        };
+
+        writeln!(
+            handle,
+            "{}{}{}",
+            prefix,
+            self.colors.filename.paint(name),
+            mode
+        )?;
 
         if self.config.output_components.grid() {
-            self.print_horizontal_line(handle, '┼')?;
+            if self.content_type.is_text() {
+                self.print_horizontal_line(handle, '┼')?;
+            } else {
+                self.print_horizontal_line(handle, '┴')?;
+            }
         }
 
         Ok(())
     }
 
     fn print_footer(&mut self, handle: &mut Write) -> Result<()> {
-        if self.config.output_components.grid() {
+        if self.config.output_components.grid() && self.content_type.is_text() {
             self.print_horizontal_line(handle, '┴')
         } else {
             Ok(())
@@ -213,8 +251,27 @@ impl<'a> Printer for InteractivePrinter<'a> {
         line_number: usize,
         line_buffer: &[u8],
     ) -> Result<()> {
-        let line = String::from_utf8_lossy(&line_buffer).to_string();
+        let line = match self.content_type {
-        let regions = self.highlighter.highlight(line.as_ref());
+            ContentType::BINARY => {
+                return Ok(());
+            }
+            ContentType::UTF_16LE => UTF_16LE
+                .decode(&line_buffer, DecoderTrap::Strict)
+                .unwrap_or("Invalid UTF-16LE".into()),
+            ContentType::UTF_16BE => UTF_16BE
+                .decode(&line_buffer, DecoderTrap::Strict)
+                .unwrap_or("Invalid UTF-16BE".into()),
+            _ => String::from_utf8_lossy(&line_buffer).to_string(),
+        };
+        let regions = {
+            let highlighter = match self.highlighter {
+                Some(ref mut highlighter) => highlighter,
+                _ => {
+                    return Ok(());
+                }
+            };
+            highlighter.highlight(line.as_ref(), self.syntax_set)
+        };
 
         if out_of_range {
             return Ok(());
@@ -319,7 +376,8 @@ impl<'a> Printer for InteractivePrinter<'a> {
                                                 .iter()
                                                 .map(|ref d| d
                                                     .generate(line_number, true, self)
-                                                    .text).collect::<Vec<String>>()
+                                                    .text)
+                                                .collect::<Vec<String>>()
                                                 .join(" ")
                                         ))
                                     } else {

src/style.rs

@@ -23,11 +23,13 @@ pub enum OutputWrap {
 impl OutputComponent {
     pub fn components(&self, interactive_terminal: bool) -> &'static [OutputComponent] {
         match *self {
-            OutputComponent::Auto => if interactive_terminal {
+            OutputComponent::Auto => {
-                OutputComponent::Full.components(interactive_terminal)
+                if interactive_terminal {
-            } else {
+                    OutputComponent::Full.components(interactive_terminal)
-                OutputComponent::Plain.components(interactive_terminal)
+                } else {
-            },
+                    OutputComponent::Plain.components(interactive_terminal)
+                }
+            }
             OutputComponent::Changes => &[OutputComponent::Changes],
             OutputComponent::Grid => &[OutputComponent::Grid],
             OutputComponent::Header => &[OutputComponent::Header],
@@ -81,6 +83,6 @@ impl OutputComponents {
     }
 
     pub fn plain(&self) -> bool {
-        self.0.is_empty()
+        self.0.iter().all(|c| c == &OutputComponent::Plain)
     }
 }

src/syntax_mapping.rs

@@ -0,0 +1,35 @@
+use std::borrow::Cow;
+use std::collections::HashMap;
+
+#[derive(Debug, Clone)]
+pub struct SyntaxMapping(HashMap<String, String>);
+
+impl SyntaxMapping {
+    pub fn new() -> SyntaxMapping {
+        SyntaxMapping(HashMap::new())
+    }
+
+    pub fn insert(&mut self, from: String, to: String) -> Option<String> {
+        self.0.insert(from, to)
+    }
+
+    pub fn replace<'a>(&self, input: &'a str) -> Cow<'a, str> {
+        let mut out = Cow::from(input);
+        if let Some(value) = self.0.get(input) {
+            out = Cow::from(value.clone())
+        }
+        out
+    }
+}
+
+#[test]
+fn basic() {
+    let mut map = SyntaxMapping::new();
+    map.insert("Cargo.lock".into(), "toml".into());
+    map.insert(".ignore".into(), ".gitignore".into());
+
+    assert_eq!("toml", map.replace("Cargo.lock"));
+    assert_eq!("other.lock", map.replace("other.lock"));
+
+    assert_eq!(".gitignore", map.replace(".ignore"));
+}

src/terminal.rs

@@ -1,32 +1,15 @@
+extern crate ansi_colours;
+
 use ansi_term::Colour::{Fixed, RGB};
 use ansi_term::{self, Style};
 
 use syntect::highlighting::{self, FontStyle};
 
-/// Approximate a 24 bit color value by a 8 bit ANSI code
-fn rgb2ansi(r: u8, g: u8, b: u8) -> u8 {
-    const BLACK: u8 = 16;
-    const WHITE: u8 = 231;
-
-    if r == g && g == b {
-        if r < 8 {
-            BLACK
-        } else if r > 248 {
-            WHITE
-        } else {
-            ((r - 8) as u16 * 24 / 247) as u8 + 232
-        }
-    } else {
-        36 * (r / 51) + 6 * (g / 51) + (b / 51) + 16
-    }
-}
-
 pub fn to_ansi_color(color: highlighting::Color, true_color: bool) -> ansi_term::Colour {
     if true_color {
         RGB(color.r, color.g, color.b)
     } else {
-        let ansi_code = rgb2ansi(color.r, color.g, color.b);
+        Fixed(ansi_colours::ansi256_from_rgb((color.r, color.g, color.b)))
-        Fixed(ansi_code)
     }
 }
 
@@ -54,27 +37,3 @@ pub fn as_terminal_escaped(
 
     style.paint(text).to_string()
 }
-
-#[test]
-fn test_rgb2ansi_black_white() {
-    assert_eq!(16, rgb2ansi(0x00, 0x00, 0x00));
-    assert_eq!(231, rgb2ansi(0xff, 0xff, 0xff));
-}
-
-#[test]
-fn test_rgb2ansi_gray() {
-    assert_eq!(241, rgb2ansi(0x6c, 0x6c, 0x6c));
-    assert_eq!(233, rgb2ansi(0x1c, 0x1c, 0x1c));
-}
-
-#[test]
-fn test_rgb2ansi_color() {
-    assert_eq!(96, rgb2ansi(0x87, 0x5f, 0x87));
-    assert_eq!(141, rgb2ansi(0xaf, 0x87, 0xff));
-    assert_eq!(193, rgb2ansi(0xd7, 0xff, 0xaf));
-}
-
-#[test]
-fn test_rgb2ansi_approx() {
-    assert_eq!(231, rgb2ansi(0xfe, 0xfe, 0xfe));
-}

src/util.rs

@@ -0,0 +1,27 @@
+/// Helper function that might appear in Rust stable at some point
+/// (https://doc.rust-lang.org/stable/std/option/enum.Option.html#method.transpose)
+pub fn transpose<T, E>(opt: Option<Result<T, E>>) -> Result<Option<T>, E> {
+    opt.map_or(Ok(None), |res| res.map(Some))
+}
+
+#[cfg(test)]
+mod tests {
+    use super::transpose;
+
+    #[derive(Debug, PartialEq)]
+    struct TestError;
+
+    type TestResult<T> = Result<T, TestError>;
+
+    #[test]
+    fn basic() {
+        let a: Option<TestResult<i32>> = Some(Ok(2));
+        assert_eq!(Ok(Some(2)), transpose(a));
+
+        let b: Option<TestResult<i32>> = Some(Err(TestError));
+        assert_eq!(Err(TestError), transpose(b));
+
+        let c: Option<TestResult<i32>> = None;
+        assert_eq!(Ok(None), transpose(c));
+    }
+}

tests/benchmarks/comparison.sh

@@ -10,6 +10,7 @@ SRC="test-src/jquery-3.3.1.js"
 
 
 cmd_bat="bat --style=full --color=always --paging=never '$SRC'"
+cmd_bat_simple="bat --plain --wrap=never --tabs=0 --color=always --paging=never '$SRC'"
 cmd_pygmentize="pygmentize -g '$SRC'"
 cmd_highlight="highlight -O truecolor '$SRC'"
 cmd_ccat="ccat --color=always '$SRC'"
@@ -20,6 +21,7 @@ cmd_rouge="rougify '$SRC'"
 
 hyperfine --warmup 3 \
     "$cmd_bat" \
+    "$cmd_bat_simple" \
     "$cmd_pygmentize" \
     "$cmd_highlight" \
     "$cmd_ccat" \

tests/examples/multiline.txt

@@ -0,0 +1,4 @@
+line 1
+line 2
+line 3
+line 4

tests/examples/test.txt

@@ -0,0 +1 @@
+hello world

tests/integration_tests.rs

@@ -0,0 +1,152 @@
+extern crate assert_cmd;
+
+use assert_cmd::prelude::*;
+use std::process::Command;
+
+fn bat() -> Command {
+    let mut cmd = Command::main_binary().unwrap();
+    cmd.current_dir("tests/examples");
+    cmd.arg("--no-config");
+    cmd.env_remove("PAGER");
+    cmd.env_remove("BAT_PAGER");
+    cmd
+}
+
+#[test]
+fn basic() {
+    bat()
+        .arg("test.txt")
+        .assert()
+        .success()
+        .stdout("hello world\n")
+        .stderr("");
+}
+
+#[test]
+fn stdin() {
+    bat()
+        .with_stdin()
+        .buffer("foo\nbar\n")
+        .assert()
+        .success()
+        .stdout("foo\nbar\n");
+}
+
+#[test]
+fn concatenate() {
+    bat()
+        .arg("test.txt")
+        .arg("test.txt")
+        .assert()
+        .success()
+        .stdout("hello world\nhello world\n");
+}
+
+#[test]
+fn concatenate_stdin() {
+    bat()
+        .arg("test.txt")
+        .arg("-")
+        .arg("test.txt")
+        .with_stdin()
+        .buffer("stdin\n")
+        .assert()
+        .success()
+        .stdout("hello world\nstdin\nhello world\n");
+}
+
+#[test]
+fn line_numbers() {
+    bat()
+        .arg("multiline.txt")
+        .arg("--style=numbers")
+        .arg("--decorations=always")
+        .assert()
+        .success()
+        .stdout("   1 line 1\n   2 line 2\n   3 line 3\n   4 line 4\n");
+}
+
+#[test]
+fn line_range_2_3() {
+    bat()
+        .arg("multiline.txt")
+        .arg("--line-range=2:3")
+        .assert()
+        .success()
+        .stdout("line 2\nline 3\n");
+}
+
+#[test]
+fn line_range_first_two() {
+    bat()
+        .arg("multiline.txt")
+        .arg("--line-range=:2")
+        .assert()
+        .success()
+        .stdout("line 1\nline 2\n");
+}
+
+#[test]
+fn line_range_last_3() {
+    bat()
+        .arg("multiline.txt")
+        .arg("--line-range=2:")
+        .assert()
+        .success()
+        .stdout("line 2\nline 3\nline 4\n");
+}
+
+#[test]
+fn fail_non_existing() {
+    bat().arg("non-existing-file").assert().failure();
+}
+
+#[test]
+fn fail_directory() {
+    bat().arg("sub_directory").assert().failure();
+}
+
+#[test]
+fn do_not_exit_directory() {
+    bat()
+        .arg("sub_directory")
+        .arg("test.txt")
+        .assert()
+        .stdout("hello world\n")
+        .failure();
+}
+
+#[test]
+fn pager_basic() {
+    bat()
+        .env("PAGER", "echo pager-output")
+        .arg("--paging=always")
+        .arg("test.txt")
+        .assert()
+        .success()
+        .stdout("pager-output\n");
+}
+
+#[test]
+fn pager_overwrite() {
+    bat()
+        .env("PAGER", "echo other-pager")
+        .env("BAT_PAGER", "echo pager-output")
+        .arg("--paging=always")
+        .arg("test.txt")
+        .assert()
+        .success()
+        .stdout("pager-output\n");
+}
+
+#[test]
+fn pager_disable() {
+    bat()
+        .env("PAGER", "echo other-pager")
+        .env("BAT_PAGER", "")
+        .arg("--paging=always")
+        .arg("test.txt")
+        .assert()
+        .success()
+        .stdout("hello world\n");
+}

tests/tester.rs

@@ -43,6 +43,7 @@ impl BatTester {
             .current_dir(self.temp_dir.path())
             .args(&[
                 "sample.rs",
+                "--no-config",
                 "--paging=never",
                 "--color=never",
                 "--decorations=always",
@@ -50,7 +51,8 @@ impl BatTester {
                 &format!("--wrap={}", if wrap { "character" } else { "never" }),
                 &format!("--tabs={}", tab_width),
                 &format!("--style={}", style),
-            ]).output()
+            ])
+            .output()
             .expect("bat failed");
 
         // have to do the replace because the filename in the header changes based on the current working directory