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kakoune/rc/filetype/latex.kak

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# https://www.latex-project.org/
#
# Detection
# ‾‾‾‾‾‾‾‾‾
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hook global BufCreate .*\.(tex|cls|sty|dtx) %{
set-option buffer filetype latex
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}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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hook global WinSetOption filetype=latex %(
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require-module latex
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hook window InsertChar \n -group latex-indent %{ latex-indent-newline }
hook window InsertChar \} -group latex-indent %{ latex-indent-closing-brace }
hook window ModeChange pop:insert:.* -group latex-indent %{ latex-trim-indent }
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hook -once -always window WinSetOption filetype=.* %{ remove-hooks latex-indent }
hook window InsertChar \n -group latex-insert latex-insert-on-new-line
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)
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hook -group latex-highlight global WinSetOption filetype=latex %{
add-highlighter window/latex ref latex
hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/latex }
}
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provide-module latex %~
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# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/latex regions
add-highlighter shared/latex/content default-region group
add-highlighter shared/latex/comment region '(?<!\\)%' '\n' fill comment
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# Scopes, starting with a backslash
add-highlighter shared/latex/content/ regex '\\(?!_)\w+\b' 0:keyword
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# Options passed to scopes, between brackets
add-highlighter shared/latex/content/ regex '\\(?!_)\w+\b\[([^\]]+)\]' 1:value
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# Content between dollar signs/pairs
add-highlighter shared/latex/content/ regex '((?<!\\)\$(\\\$|[^$])+\$)|((?<!\\)\$\$(\\\$|[^$])+\$\$)|((?<!\\)\\\[.*?\\\])|(\\\(.*?\\\))' 0:meta
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# Emphasized text
add-highlighter shared/latex/content/ regex '\\(emph|textit)\{([^}]+)\}' 2:default+i
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# Bold text
add-highlighter shared/latex/content/ regex '\\textbf\{([^}]+)\}' 1:default+b
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# Section headings
add-highlighter shared/latex/content/ regex '\\(part|section)\*?\{([^}]+)\}' 2:title
add-highlighter shared/latex/content/ regex '\\(chapter|(sub)+section|(sub)*paragraph)\*?\{([^}]+)\}' 4:header
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# Indent
# ------
define-command -hidden latex-trim-indent %{
evaluate-commands -no-hooks -draft -itersel %{
try %{ execute-keys <a-x> 1s^(\h+)$<ret> d }
}
}
define-command -hidden latex-indent-newline %(
evaluate-commands -no-hooks -draft -itersel %(
# copy '%' comment prefix and following white spaces
try %{ execute-keys -draft k<a-x> s^\h*%\h*<ret> y jgh P }
# preserve previous line indent
try %{ execute-keys -draft K<a-&> }
# cleanup trailing whitespaces from previous line
try %{ execute-keys -draft k<a-x> s\h+$<ret> d }
# indent after line ending with {
try %( execute-keys -draft k<a-x> <a-k>\{$<ret> j<a-gt> )
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# deindent closing brace(s) when after cursor
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try %( execute-keys -draft <a-x> <a-k> ^\h*\} <ret> gh / \} <ret> m <a-S> 1<a-&> )
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# indent after line ending with \begin{...}[...]{...}, with multiple
# sets of arguments possible
try %(
execute-keys -draft \
k<a-x> \
<a-k>\\begin\h*\{[^\}]+\}(\h|\[.*\]|\{.*\})*$<ret> \
j<a-gt>
)
)
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)
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define-command -hidden latex-indent-closing-brace %(
evaluate-commands -no-hooks -draft -itersel %(
# Align lone } with matching bracket
try %( execute-keys -draft <a-x>_ <a-k>\A\}\z<ret> m<a-S>1<a-&> )
# Align \end{...} with corresponding \begin{...}
try %(
execute-keys -draft h<a-h> 1s\\end\h*\{([^\}]+)\}\z<ret> \
<a-?>\\begin\s*\{<c-r>.\}<ret> <a-S>1<a-&>
)
)
)
define-command -hidden latex-insert-on-new-line %(
evaluate-commands -no-hooks -draft -itersel %(
# Wisely add "\end{...}".
evaluate-commands -save-regs xz %(
# Save previous line indent in register x.
try %( execute-keys -draft k<a-x>s^\h+<ret>"xy ) catch %( reg x '' )
# Save item of begin in register z.
try %( execute-keys -draft k<a-x>s\{.*\}<ret>"zy ) catch %( reg z '' )
try %(
# Validate previous line and that it is not closed yet.
execute-keys -draft k<a-x> <a-k>^<c-r>x\h*\\begin\{.*\}<ret> J}iJ<a-x> <a-K>^<c-r>x(\\end\<c-r>z<backspace>\})<ret>
# Auto insert "\end{...}".
execute-keys -draft o<c-r>x\end<c-r>z<esc>
)
)
)
)
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~