runtime(vim): Highlight string interpolation
closes: #13923
Signed-off-by: thinca <thinca@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index ccbc20a..f1944ca 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -370,6 +370,12 @@
syn match vimStringCont contained +\(\\\\\|.\)\{-}[^\\]"+
syn match vimEscape contained "\\."
+syn region vimString start=+$'+ end=+'+ skip=+''+ oneline contains=vimStringInterpolationBrace,vimStringInterpolationExpr
+syn region vimString start=+$"+ end=+"+ oneline contains=@vimStringGroup,vimStringInterpolationBrace,vimStringInterpolationExpr
+syn region vimStringInterpolationExpr matchgroup=vimOperParen start=+{+ end=+}+ oneline contains=vimFunc,vimFuncVar,vimOper,vimNotation,vimOperParen,vimString,vimVar
+syn match vimStringInterpolationBrace "{{"
+syn match vimStringInterpolationBrace "}}"
+
" Substitutions: {{{2
" =============
syn cluster vimSubstList contains=vimPatSep,vimPatRegion,vimPatSepErr,vimSubstTwoBS,vimSubstRange,vimNotation
@@ -1049,6 +1055,7 @@
hi def link vimStringCont vimString
hi def link vimString String
hi def link vimStringEnd vimString
+ hi def link vimStringInterpolationBrace vimEscape
hi def link vimSubst1 vimSubst
hi def link vimSubstDelim Delimiter
hi def link vimSubstFlags Special