Please consider to remove illegal strings in syntaxes

[stone-zeng]

Although "..." and '...' may be considered to be not correct in LaTeX document, people often use it for message/log and Lua code, see e.g.

• From https://github.com/latex3/latex3/blob/master/l3kernel/l3msg.dtx

  \__kernel_msg_new:nnnn { kernel } { enable-debug }
    { To~use~'#1'~load~expl3~with~the~'enable-debug'~option. }
    {
       The~function~'#1'~will~be~ignored~because~it~can~only~work~if~
      some~internal~functions~in~expl3~have~been~appropriately~
      defined.~This~only~happens~if~one~of~the~options~
       'enable-debug',~'check-declarations'~or~'log-functions'~was~
      given~when~loading~expl3.
    }

• From https://github.com/FrankMittelbach/fmitex/blob/master/doc-v3/doc.dtx

      \cs_if_exist:NTF #1
        {
          \__doc_trace:x{Indexing~ '#3'\space as~ 
                         \tl_use:N \l__doc_idxtype_tl }
          #1{#2}{#3}
        }
        {
          \PackageError{doc}{Doc~ element~
             '\tl_use:N \l__doc_idxtype_tl'~ unknown}%
  
            {When~ using~ '\string\RecordIndexType'~ the~ type~ must~ 
             be~ known~\MessageBreak
             to~ the~ system,~ i.e.,~ declared~ via~ 
             '\string\NewDocElement'\MessageBreak
             before~ it~ can~ be~ used~ in~ indexing.}
       }

• From https://github.com/wspr/fontspec/blob/master/fontspec-code-msg.dtx

  \@@_msg_new:nnn {fontspec} {icu-feature-not-exist-in-font}
   {
    OpenType feature '\l_keys_key_tl=\l_keys_value_tl' (#1) not available
    for font '\l_fontspec_fontname_tl'
    with script '\l_@@_script_name_tl' and language '\l_@@_lang_name_tl'.
   }

• From https://github.com/wspr/fontspec/blob/master/fontspec-code-opentype.dtx

          \lua_now:e { fontspec.check_ot_script("\l_@@_tmp_tl", "#2") }

So please consider to remove the following rules (to avoid the red background in github):

latex.tmbundle/Syntaxes/LaTeX.plist

Lines 1626 to 1637 in 404e004

	<dict>
	<key>match</key>
	<string>(?&lt;!\S)'.*?'</string>
	<key>name</key>
	<string>invalid.illegal.string.quoted.single.latex</string>
	</dict>
	<dict>
	<key>match</key>
	<string>(?&lt;!\S)".*?"</string>
	<key>name</key>
	<string>invalid.illegal.string.quoted.double.latex</string>
	</dict>