home/rc/core/sh.kak
Maxime Coste ec16969609 Do not reparse %sh{...} strings
Automatic reparsing of %sh{...}, while convenient in many cases,
can be surprising as well, and can lead to security problems:

'echo %sh{ printf "foo\necho bar" }' runs 'echo foo', then 'echo bar'.
we make this danger explicit, and we fix the 'nop %sh{...}' pattern.

To reparse %sh{...} strings, they can be passed to evaluate-commands,
which has been fixed to work in every cases where %sh{...} reparsing
was used..
2018-07-05 07:54:28 +10:00

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hook global BufCreate .*\.(z|ba|c|k|mk)?sh(rc|_profile)? %{
set-option buffer filetype sh
}
add-highlighter shared/ regions -default code -match-capture sh \
double_string %{(?<!\\)(?:\\\\)*\K"} %{(?<!\\)(?:\\\\)*"} '' \
single_string %{(?<!\\)(?:\\\\)*\K'} %{'} '' \
comment '(?<!\$)#' '$' '' \
heredoc '<<-?(\w+)' '^\t*(\w+)$' ''
add-highlighter shared/sh/double_string fill string
add-highlighter shared/sh/single_string fill string
add-highlighter shared/sh/comment fill comment
add-highlighter shared/sh/heredoc fill string
evaluate-commands %sh{
# Grammar
keywords="alias|bind|builtin|caller|case|cd|command|coproc|declare|do|done"
keywords="${keywords}|echo|elif|else|enable|esac|exit|fi|for|function|help"
keywords="${keywords}|if|in|let|local|logout|mapfile|printf|read|readarray"
keywords="${keywords}|readonly|return|select|set|shift|source|test|then"
keywords="${keywords}|time|type|typeset|ulimit|unalias|until|while|break|continue"
# Add the language's grammar to the static completion list
printf %s\\n "hook global WinSetOption filetype=sh %{
set-option window static_words '${keywords}'
}" | tr '|' ':'
# Highlight keywords
printf %s "add-highlighter shared/sh/code regex \b(${keywords})\b 0:keyword"
}
add-highlighter shared/sh/code regex [\[\]\(\)&|]{1,2} 0:operator
add-highlighter shared/sh/code regex (\w+)= 1:variable
add-highlighter shared/sh/code regex ^\h*(\w+)\h*\(\) 1:variable
add-highlighter shared/sh/code regex \$(\w+|\{.+?\}|#|@|\?|\$|!|-|\*) 0:value
add-highlighter shared/sh/double_string regex \$(\w+|\{.+?\}) 0:value
hook -group sh-highlight global WinSetOption filetype=sh %{ add-highlighter window ref sh }
hook -group sh-highlight global WinSetOption filetype=(?!sh).* %{ remove-highlighter window/sh }