home/rc/filetype/latex.kak

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# https://www.latex-project.org/
#
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*\.(tex|cls|sty|dtx) %{
set-option buffer filetype latex
}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=latex %(
require-module latex
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 }
hook -once -always window WinSetOption filetype=.* %{ remove-hooks window latex-indent }
hook window InsertChar \n -group latex-insert latex-insert-on-new-line
)
hook -group latex-highlight global WinSetOption filetype=latex %{
add-highlighter window/latex ref latex
hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/latex }
}
provide-module latex %~
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/latex regions
add-highlighter shared/latex/content default-region group
add-highlighter shared/latex/comment region '(?<!\\)%' '\n' fill comment
# latex2e private functions
add-highlighter shared/latex/content/ regex '\\[a-zA-Z@]+\b' 0:function
# Scopes, starting with a backslash
add-highlighter shared/latex/content/ regex '\\[a-zA-Z]+\b' 0:keyword
# latex3 functions (expl3 doc)
add-highlighter shared/latex/content/ regex '\\(?:__|@@_)?[a-zA-Z@]+_\w+(:[nNpTFDwcVvxefo]+)?\b' 0:function 1:+db@type
# latex3 variable (expl3 doc)
add-highlighter shared/latex/content/ regex '\\([lgc]_)[a-zA-Z]+_[a-zA-Z]+\b' 0:variable 1:+db
# latex3 type (expl3 doc)s
add-highlighter shared/latex/content/ regex '_(bool|box|cctab|clist|coffin|dim|fp|ior|iow|int|muskip|prop|seq|skip|str|tl)' 0:+db
# latex3 l3kernel modules (l3kernel/doc/l3prefixes.csv)
add-highlighter shared/latex/content/ regex '\\(alignment|alloc|ampersand|atsign|backslash|bitset|bool|box|catcode|cctab|char|chk|circumflex|clist|code|codedoc|coffin|colon|color|cs|debug|dim|document|dollar|driver|e|else|empty|etex|exp|expl|false|fi|file|flag|fp|group|hash|hbox|hcoffin|if|inf|initex|insert|int|intarray|ior|iow|job|kernel|keys|keyval|left|log|lua|luatex|mark|marks|math|max|minus|mode|msg|muskip|nan|nil|no|novalue|one|or|other|parameter|pdf|pdftex|peek|percent|pi|prg|prop|ptex|quark|recursion|ref|regex|reverse|right|scan|seq|skip|sort|space|stop|str|sys|tag|term|tex|text|tilde|tl|tmpa|tmpb|token|true|underscore|uptex|use|utex|vbox|vcoffin|xetex|zero)_' 0:+db
# macros arguments
add-highlighter shared/latex/content/ regex '#[1-9]\b' 0:string
# grouped lists
add-highlighter shared/latex/content/ regex '\{([\s/;, \w]+)\}' 1:string
# Options passed to scopes, between brackets
add-highlighter shared/latex/content/ regex '\\(?!_)\w+\b\[([^\]]+)\]' 1:value
# Content between dollar signs/pairs
add-highlighter shared/latex/content/ regex '((?<!\\)\$(\\\$|[^$])+\$)|((?<!\\)\$\$(\\\$|[^$])+\$\$)|((?<!\\)\\\[.*?\\\])|(\\\(.*?\\\))' 0:meta
# Emphasized text
add-highlighter shared/latex/content/ regex '\\(emph|textit)\{([^}]+)\}' 2:default+i
# Bold text
add-highlighter shared/latex/content/ regex '\\textbf\{([^}]+)\}' 1:default+b
# 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
# 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> )
# deindent closing brace(s) when after cursor
try %( execute-keys -draft <a-x> <a-k> ^\h*\} <ret> gh / \} <ret> m <a-S> 1<a-&> )
# 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>
)
)
)
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>
)
)
)
)
~