kakoune/rc/base/lua.kak

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# http://lua.org
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# require commenting.kak
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufSetOption mimetype=text/x-lua %{
set buffer filetype lua
}
hook global BufCreate .*[.](lua) %{
set buffer mimetype text/x-lua
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
addhl -group / regions -default code lua \
string '"' (?<!\\)(\\\\)*" '' \
string "'" (?<!\\)(\\\\)*' '' \
comment '--' '$' '' \
comment '\Q--[[' ']]' '' \
addhl -group /lua/string fill string
addhl -group /lua/comment fill comment
addhl -group /lua/code regex \b(and|break|do|else|elseif|end|false|for|function|goto|if|in|local|nil|not|or|repeat|return|then|true|until|while)\b 0:keyword
# Commands
# ‾‾‾‾‾‾‾‾
def lua-alternative-file -docstring 'Jump to the alternate file (implementation ↔ test)' %{ %sh{
case $kak_buffile in
*spec/*_spec.lua)
altfile=$(eval echo $(echo $kak_buffile | sed s+spec/+'*'/+';'s/_spec//))
[ ! -f $altfile ] && echo "echo -color Error 'implementation file not found'" && exit
;;
*.lua)
path=$kak_buffile
dirs=$(while [ $path ]; do echo $path; path=${path%/*}; done | tail -n +2)
for dir in $dirs; do
altdir=$dir/spec
if [ -d $altdir ]; then
altfile=$altdir/$(realpath $kak_buffile --relative-to $dir | sed s+[^/]'*'/++';'s/.lua$/_spec.lua/)
break
fi
done
[ ! -d $altdir ] && echo "echo -color Error 'spec/ not found'" && exit
;;
*)
echo "echo -color Error 'alternative file not found'" && exit
;;
esac
echo "edit $altfile"
}}
def -hidden _lua_filter_around_selections %{
eval -draft -itersel %{
exec <a-x>
# remove trailing white spaces
try %{ exec -draft s \h + $ <ret> d }
}
}
def -hidden _lua_indent_on_char %{
eval -draft -itersel %{
# align end structure to start
try %{ exec -draft <a-x> <a-k> ^ \h * end $ <ret> <a-\;> <a-?> ^ \h * (for|function|if|while) <ret> s \A | \Z <ret> \' <a-&> }
# align _else_ statements to previous _if_
try %{ exec -draft <a-x> <a-k> ^ \h * else (if) ? $ <ret> <a-\;> <a-?> ^ \h * if <ret> s \A | \Z <ret> \' <a-&> }
}
}
def -hidden _lua_indent_on_new_line %{
eval -draft -itersel %{
# preserve previous line indent
try %{ exec -draft K <a-&> }
# filter previous line
try %{ exec -draft k : _lua_filter_around_selections <ret> }
# copy -- comment prefix and following white spaces
try %{ exec -draft k x s ^ \h * \K -- \h * <ret> y j p }
# indent after start structure
try %{ exec -draft k x <a-k> ^ \h * (else|elseif|for|function|if|while) \b <ret> j <a-gt> }
# wisely add end structure
eval -save-regs x %{
try %{ exec -draft k x s ^ \h + <ret> \" x y } catch %{ reg x '' }
try %{ exec -draft k x <a-k> ^ <c-r> x (for|function|if|while) <ret> j <a-a> i X <a-\;> K <a-K> ^ <c-r> x (for|function|if|while) . * \n <c-r> x end $ <ret> j x y p j a end <esc> <a-lt> }
}
}
}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=lua %{
addhl ref lua
hook window InsertEnd .* -group lua-hooks _lua_filter_around_selections
hook window InsertChar .* -group lua-indent _lua_indent_on_char
hook window InsertChar \n -group lua-indent _lua_indent_on_new_line
alias window alt lua-alternative-file
set window comment_line_chars '--'
set window comment_selection_chars '\Q--[[:]]'
}
hook global WinSetOption filetype=(?!lua).* %{
rmhl lua
rmhooks window lua-indent
rmhooks window lua-hooks
unalias window alt lua-alternative-file
}