Vim: highlight escapes for byte literals.

diff --git a/src/etc/vim/syntax/rust.vim b/src/etc/vim/syntax/rust.vim
index 77348335eb3464094ff1e49af9ccdb496f58e307..b7901277ada17a8b5dd190157f15a2447b09c49d 100644 (file)
--- a/src/etc/vim/syntax/rust.vim
+++ b/src/etc/vim/syntax/rust.vim
@@ -145,11 +145,13 @@ syn match     rustOperator     display "&&\|||"
 syn match     rustMacro       '\w\(\w\)*!' contains=rustAssert,rustFail
 syn match     rustMacro       '#\w\(\w\)*' contains=rustAssert,rustFail
 
-syn match     rustSpecialError display contained /\\./
-syn match     rustSpecial     display contained /\\\([nrt0\\'"]\|x\x\{2}\|u\x\{4}\|U\x\{8}\)/
+syn match     rustEscapeError   display contained /\\./
+syn match     rustEscape        display contained /\\\([nrt0\\'"]\|x\x\{2}\)/
+syn match     rustEscapeUnicode display contained /\\\(u\x\{4}\|U\x\{8}\)/
 syn match     rustStringContinuation display contained /\\\n\s*/
-syn region    rustString      start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=rustSpecial,rustSpecialError,rustStringContinuation,@Spell
-syn region    rustString      start='r\z(#*\)"' end='"\z1' contains=@Spell
+syn region    rustString      start=+b"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeError,rustStringContinuation
+syn region    rustString      start=+"+ skip=+\\\\\|\\"+ end=+"+ contains=rustEscape,rustEscapeUnicode,rustEscapeError,rustStringContinuation,@Spell
+syn region    rustString      start='b\?r\z(#*\)"' end='"\z1' contains=@Spell
 
 syn region    rustAttribute   start="#!\?\[" end="\]" contains=rustString,rustDeriving
 syn region    rustDeriving    start="deriving(" end=")" contained contains=rustTrait
@@ -177,7 +179,8 @@ syn region rustGenericLifetimeCandidate display start=/\%(<\|,\s*\)\@<='/ end=/[
 
 "rustLifetime must appear before rustCharacter, or chars will get the lifetime highlighting
 syn match     rustLifetime    display "\'\%([^[:cntrl:][:space:][:punct:][:digit:]]\|_\)\%([^[:cntrl:][:punct:][:space:]]\|_\)*"
-syn match   rustCharacter   /'\([^'\\]\|\\\(.\|x\x\{2}\|u\x\{4}\|U\x\{8}\)\)'/ contains=rustSpecial,rustSpecialError
+syn match   rustCharacter   /b'\([^'\\]\|\\\(.\|x\x\{2}\)\)'/ contains=rustEscape,rustEscapeError
+syn match   rustCharacter   /'\([^'\\]\|\\\(.\|x\x\{2}\|u\x\{4}\|U\x\{8}\)\)'/ contains=rustEscape,rustEscapeUnicode,rustEscapeError
 
 syn region rustCommentLine                                        start="//"                      end="$"   contains=rustTodo,@Spell
 syn region rustCommentLineDoc                                     start="//\%(//\@!\|!\)"         end="$"   contains=rustTodo,@Spell
@@ -215,8 +218,9 @@ hi def link rustIdentifierPrime rustIdentifier
 hi def link rustTrait           rustType
 
 hi def link rustSigil         StorageClass
-hi def link rustSpecial       Special
-hi def link rustSpecialError  Error
+hi def link rustEscape        Special
+hi def link rustEscapeUnicode rustEscape
+hi def link rustEscapeError   Error
 hi def link rustStringContinuation Special
 hi def link rustString        String
 hi def link rustCharacter     Character