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9e142c6643
Previously, one of the syntaxes for italic was (greatly summarized) something
like this:
[^_]_[^_]+_[^_]
That is to say, the regex matched the blanks on both sides of the italic span,
as well as the actual span content. That means that if you had consecutive
italic words:
_some_ _italic_ _words_
...only the odd-numbered words would be highlighted: the space after "_some_"
was counted as part of that span, so it wasn't available as part of "_italic_"
and therefore "_italic_" wouldn't be highlighted. Likewise, if the first word
in a buffer was italic, it wouldn't be highlighted because the first underscore
was not preceded by a non-underscore character!
Now we use lookahead/lookbehind assertions, which don't count as part of the
matched span, so consecutive spans don't interfere with one another.
Fixes #2111.
84 lines
3.6 KiB
Plaintext
84 lines
3.6 KiB
Plaintext
# http://daringfireball.net/projects/markdown
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# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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# Detection
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# ‾‾‾‾‾‾‾‾‾
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hook global BufCreate .*[.](markdown|md|mkd) %{
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set-option buffer filetype markdown
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}
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# Highlighters
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# ‾‾‾‾‾‾‾‾‾‾‾‾
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add-highlighter shared/markdown regions
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add-highlighter shared/markdown/content default-region group
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evaluate-commands %sh{
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languages="
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c cabal clojure coffee cpp css cucumber d diff dockerfile fish gas go
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haml haskell html ini java javascript json julia kak kickstart latex
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lisp lua makefile markdown moon objc perl pug python ragel ruby rust
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sass scala scss sh swift tupfile typescript yaml
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"
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for lang in ${languages}; do
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printf 'add-highlighter shared/markdown/%s region -match-capture ^(\h*)```\h*%s\\b ^(\h*)``` regions\n' "${lang}" "${lang}"
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printf 'add-highlighter shared/markdown/%s/ default-region fill meta\n' "${lang}"
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[ "${lang}" = kak ] && ref=kakrc || ref="${lang}"
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printf 'add-highlighter shared/markdown/%s/inner region \A```[^\\n]*\K (?=```) ref %s\n' "${lang}" "${ref}"
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done
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}
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add-highlighter shared/markdown/codeblock region -match-capture \
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^(\h*)```\h* \
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^(\h*)```\h*$ \
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fill meta
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add-highlighter shared/markdown/codespan region -match-capture (`+) (`+) fill mono
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# Setext-style header
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add-highlighter shared/markdown/content/ regex (\A|\n\n)[^\n]+\n={2,}\h*\n\h*$ 0:title
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add-highlighter shared/markdown/content/ regex (\A|\n\n)[^\n]+\n-{2,}\h*\n\h*$ 0:header
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# Atx-style header
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add-highlighter shared/markdown/content/ regex ^(#+)(\h+)([^\n]+) 1:header
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add-highlighter shared/markdown/content/ regex ^\h?((?:[\s\t]+)?[-\*])\h+[^\n]*(\n\h+[^-\*]\S+[^\n]*\n)*$ 0:list 1:bullet
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add-highlighter shared/markdown/content/ regex \B\+[^\n]+?\+\B 0:mono
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add-highlighter shared/markdown/content/ regex (?<!\*)(\*([^\s*]|([^\s*](\n?[^\n*])*[^\s*]))\*)(?!\*) 1:italic
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add-highlighter shared/markdown/content/ regex (?<!_)(_([^\s_]|([^\s_](\n?[^\n_])*[^\s_]))_)(?!_) 1:italic
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add-highlighter shared/markdown/content/ regex (?<!\*)(\*\*([^\s*]|([^\s*](\n?[^\n*])*[^\s*]))\*\*)(?!\*) 1:bold
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add-highlighter shared/markdown/content/ regex (?<!_)(__([^\s_]|([^\s_](\n?[^\n_])*[^\s_]))__)(?!_) 1:bold
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add-highlighter shared/markdown/content/ regex <(([a-z]+://.*?)|((mailto:)?[\w+-]+@[a-z]+[.][a-z]+))> 0:link
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add-highlighter shared/markdown/content/ regex ^\[[^\]\n]*\]:\h*([^\n]*) 1:link
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add-highlighter shared/markdown/content/ regex ^\h*(>\h*)+ 0:comment
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add-highlighter shared/markdown/content/ regex \H\K\h\h$ 0:PrimarySelection
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# Commands
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# ‾‾‾‾‾‾‾‾
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define-command -hidden markdown-indent-on-new-line %{
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evaluate-commands -draft -itersel %{
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# copy block quote(s), list item prefix and following white spaces
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try %{ execute-keys -draft k <a-x> s ^\h*\K((>\h*)+([*+-]\h)?|(>\h*)*[*+-]\h)\h* <ret> y gh j P }
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# preserve previous line indent
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try %{ execute-keys -draft \; K <a-&> }
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# remove trailing white spaces
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try %{ execute-keys -draft -itersel %{ k<a-x> s \h+$ <ret> d } }
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}
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}
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# Initialization
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# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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hook -group markdown-highlight global WinSetOption filetype=markdown %{ add-highlighter window/markdown ref markdown }
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hook global WinSetOption filetype=markdown %{
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hook window InsertChar \n -group markdown-indent markdown-indent-on-new-line
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}
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hook -group markdown-highlight global WinSetOption filetype=(?!markdown).* %{ remove-highlighter window/markdown }
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hook global WinSetOption filetype=(?!markdown).* %{
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remove-hooks window markdown-indent
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}
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