Feat: conceal backslash if it is a valid escape code leader

This should close preservim#510
flw-cn · Sep 13, 2020 · 57874cb · 57874cb
1 parent 8e5d86f
commit 57874cb
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/syntax/markdown.vim b/syntax/markdown.vim
@@ -116,6 +116,9 @@ syn match mkdRule /^\s*\*\s\{0,1}\*\s\{0,1}\*\(\*\|\s\)*$/
 syn match mkdRule /^\s*-\s\{0,1}-\s\{0,1}-\(-\|\s\)*$/
 syn match mkdRule /^\s*_\s\{0,1}_\s\{0,1}_\(_\|\s\)*$/
 
+syntax region mkdEscape matchgroup=mkdEscape start=/\\\ze[\\\x60*{}\[\]()#+\-.!_>~|"$%&'\/:;<=?@^]/ end=/.\zs/ keepend contains=mkdEscapeCh contained oneline concealends
+syntax match mkdEscapeCh /./ contained
+
 " YAML frontmatter
 if get(g:, 'vim_markdown_frontmatter', 0)
  syn include @yamlTop syntax/yaml.vim
@@ -155,7 +158,7 @@ if get(g:, 'vim_markdown_strikethrough', 0)
  HtmlHiLink mkdStrike htmlStrike
 endif
 
-syn cluster mkdNonListItem contains=@htmlTop,htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdInlineURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6,mkdMath,mkdStrike
+syn cluster mkdNonListItem contains=@htmlTop,htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdInlineURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6,mkdMath,mkdStrike,mkdEscape
 
 "highlighting for Markdown groups
 HtmlHiLink mkdString String
@@ -177,6 +180,7 @@ HtmlHiLink mkdLinkDef mkdID
 HtmlHiLink mkdLinkDefTarget mkdURL
 HtmlHiLink mkdLinkTitle htmlString
 HtmlHiLink mkdDelimiter Delimiter
+HtmlHiLink mkdEscape Special
 
 let b:current_syntax = "mkd"
 

diff --git a/test/escapes.md b/test/escapes.md
@@ -0,0 +1,2 @@
+Escapes: \\ \` \* \{ \} \[ \] \( \) \# \+ \- \. \! \_ \< \> \~ \| \" \$ \% \& \' \/ \: \; \= \? \@ \^
+Non Escape: \a \b \c \f \n \r \t \v \x \o