Add syntax hilighting for multiple content-types

ftplugin/simplate.vim

@@ -8,9 +8,82 @@ let g:loaded_simplate_vim = 1 " simplate.vim version number
 let s:keepcpo          = &cpo
 set cpo&vim
 
+" Note that the next two functions are modifications of TextEnableCodeSnip from
+" http://vim.wikia.com/wiki/Different_syntax_highlighting_within_regions_of_a_file
+" ------------------------------------------------------------------------------
+
+" This sets the language used in the initial sections to the specified filetype
+function! SyntaxEnableLanguage(filesyntax) abort
+  let ft=toupper(a:filesyntax)
+  let group='textGroup'.ft
+  if exists('b:current_syntax')
+    let s:current_syntax=b:current_syntax
+    " Remove current syntax definition, as some syntax files (e.g. cpp.vim)
+    " do nothing if b:current_syntax is defined.
+    unlet b:current_syntax
+  endif
+  execute 'syntax include @'.group.' syntax/'.a:filesyntax.'.vim'
+  try
+    execute 'syntax include @'.group.' after/syntax/'.a:filesyntax.'.vim'
+  catch
+  endtry
+  if exists('s:current_syntax')
+    let b:current_syntax=s:current_syntax
+  else
+    unlet b:current_syntax
+  endif
+  execute 'syntax region textSnip'.ft.'
+  \ start="\%^" start="^\[----*\]\s*$"rs=e+1,hs=e+1,ms=e+1 
+  \ end="^\[----*\]"re=s-1,he=s-1,me=s-1 keepend
+  \ contains=@'.group
+endfunction
+
+" This enables sections identified by the specified contenttype to be
+" hilighted as if they're the specified filesyntax
+" Note that contenttype is actually a pattern
+function! SyntaxEnableTemplate(filesyntax,contenttype) abort
+  let ft=toupper(a:filesyntax)
+  let group='textGroup'.ft
+  if exists('b:current_syntax')
+    let s:current_syntax=b:current_syntax
+    " Remove current syntax definition, as some syntax files (e.g. cpp.vim)
+    " do nothing if b:current_syntax is defined.
+    unlet b:current_syntax
+  endif
+  execute 'syntax include @'.group.' syntax/'.a:filesyntax.'.vim'
+  try
+    execute 'syntax include @'.group.' after/syntax/'.a:filesyntax.'.vim'
+  catch
+  endtry
+  if exists('s:current_syntax')
+    let b:current_syntax=s:current_syntax
+  else
+    unlet b:current_syntax
+  endif
+  execute 'syntax region textSnip'.ft.'
+  \ start="^\[----*\].*\c'.a:contenttype.'.*$"rs=e+1,hs=e+1,ms=e+1
+  \ end="^\[----*\]"re=s-1,he=s-1,me=s-1 keepend
+  \ contains=@'.group
+endfunction
+
+
 syntax on
-syntax include @Python syntax/python.vim
-syntax region pythonCode keepend start=/\%^/ start=/^\[----*\]\s*$/rs=e+1,hs=e+1,ms=e+1 end=/^\[----*\]/re=s-1,he=s-1,me=s-1 contains=@Python
+
+" only one language at a time is currently supported
+call SyntaxEnableLanguage( 'python' )
+
+call SyntaxEnableTemplate( 'html', 'text/html' )
+call SyntaxEnableTemplate( 'css', 'text/css' )
+call SyntaxEnableTemplate( 'javascript', 'application/javascript' )
+
+" rfc 2376
+call SyntaxEnableTemplate( 'xml', 'text/xml' )
+call SyntaxEnableTemplate( 'xml', 'application/xml' )
+call SyntaxEnableTemplate( 'xml', '.*/.*+xml' )
+
+"" Not in the standard vim distro:
+
+" call SyntaxEnableTemplate( 'json', 'application/json' )
 
 " ------------------------------------------------------------------------------
 let &cpo= s:keepcpo