kakoune/rc/filetype/toml.kak
Johannes Altmanninger afd1fa2217 rc toml: fix wrong highlighting of triple quoted strings that have quotes at the end
In TOML's triple-quoted strings, it's allowed to place quotes just
next to the triple quotes.

	foo = '''bar''''
		    ^    part of the string contents
		     ^^^ closing sequence

We greedily interpret the first three single quotes as closing
sequence. As a result the remaining single quote wrongly opens a new
string. Fix this by only treating triple quotes as closing if they
are not followed by another quote.
I don't think there is another possible interpretation of quadruple
quotes in TOML, so this should not affect other valid inputs.

Fixes #4143
2022-06-26 18:07:22 +02:00

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# https://github.com/toml-lang/toml/tree/v0.4.0
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*\.(toml) %{
set-option buffer filetype toml
}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook global WinSetOption filetype=toml %{
require-module toml
hook window ModeChange pop:insert:.* -group toml-trim-indent toml-trim-indent
hook window InsertChar \n -group toml-insert toml-insert-on-new-line
hook window InsertChar \n -group toml-indent toml-indent-on-new-line
hook -once -always window WinSetOption filetype=.* %{ remove-hooks window toml-.+ }
}
hook -group toml-highlight global WinSetOption filetype=toml %{
add-highlighter window/toml ref toml
hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/toml }
}
provide-module toml %{
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
add-highlighter shared/toml regions
add-highlighter shared/toml/code default-region group
add-highlighter shared/toml/comment region '#' $ fill comment
add-highlighter shared/toml/string1 region '"""' (?<!\\)(\\\\)*"""(?!") fill string
add-highlighter shared/toml/string2 region "'''" "'''(?!')" fill string
add-highlighter shared/toml/string3 region '"' (?<!\\)(\\\\)*" fill string
add-highlighter shared/toml/string4 region "'" "'" fill string
add-highlighter shared/toml/code/ regex \
"^\h*\[\[?([A-Za-z0-9._-]*)\]\]?" 1:title
add-highlighter shared/toml/code/ regex \
(?<!\w)[+-]?[0-9](_?\d)*(\.[0-9](_?\d)*)?([eE][+-]?[0-9](_?\d)*)?\b 0:value
add-highlighter shared/toml/code/ regex \
true|false 0:value
add-highlighter shared/toml/code/ regex \
'\d{4}-\d{2}-\d{2}[Tt ]\d{2}:\d{2}:\d{2}(.\d+)?([Zz]|[+-]\d{2}:\d{2})' 0:value
# Commands
# ‾‾‾‾‾‾‾‾
define-command -hidden toml-trim-indent %{
# remove trailing white spaces
try %{ execute-keys -draft -itersel <a-x> s \h+$ <ret> d }
}
define-command -hidden toml-insert-on-new-line %{
evaluate-commands -draft -itersel %{
# copy # comments prefix and following white spaces
try %{ execute-keys -draft k <a-x> s ^\h*\K#\h* <ret> y gh j P }
}
}
define-command -hidden toml-indent-on-new-line %{
evaluate-commands -draft -itersel %{
# preserve previous line indent
try %{ execute-keys -draft <semicolon> K <a-&> }
# filter previous line
try %{ execute-keys -draft k : toml-trim-indent <ret> }
}
}
}