home/rc/extra/hbs.kak
Harm Aarts f9c860d235 Add Handlebars syntax highlighting.
This is based on the HAML syntax highlighting. Of note is the loading of
the html highlighter since Handlebars is embedded in html.
2016-12-21 21:31:05 +01:00

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# http://handlebarsjs.com/
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
# Detection
# ‾‾‾‾‾‾‾‾‾
hook global BufCreate .*[.](hbs) %{
set buffer filetype hbs
}
# Highlighters
# ‾‾‾‾‾‾‾‾‾‾‾‾
addhl -group / regions -default html hbs \
comment {{!-- --}} '' \
comment {{! }} '' \
block-expression {{ }} ''
addhl -group /hbs/comment fill comment
addhl -group /hbs/block-expression regex {{((#|/|)(\w|-)+) 1:meta
# some hbs tags have a special meaning
addhl -group /hbs/block-expression regex {{((#|/|)(if|else|unless|with|lookup|log)) 1:keyword
# 'each' is special as it really is two words 'each' and 'as'
addhl -group /hbs/block-expression regex {{((#|/|)((each).*(as))) 2:keyword 4:keyword 5:keyword
addhl -group /hbs/block-expression regex ((\w|-)+)= 1:attribute
# highlight the string values of attributes as a bonus
addhl -group /hbs/block-expression regex ((\w|-)+)=(('|").*?('|")) 1:attribute 3:value
# Commands
# ‾‾‾‾‾‾‾‾
def -hidden _hbs_filter_around_selections %{
# remove trailing white spaces
try %{ exec -draft -itersel <a-x> s \h+$ <ret> d }
}
def -hidden _hbs_indent_on_new_line %{
eval -draft -itersel %{
# preserve previous line indent
try %{ exec -draft <space> K <a-&> }
# filter previous line
try %{ exec -draft k : _hbs_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 lines beginning with : or -
try %{ exec -draft k x <a-k> ^\h*[:-] <ret> j <a-gt> }
}
}
# Initialization
# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
hook -group hbs-highlight global WinSetOption filetype=hbs %{
addhl ref hbs
addhl ref html
}
hook global WinSetOption filetype=hbs %{
hook window InsertEnd .* -group hbs-hooks _hbs_filter_around_selections
hook window InsertChar \n -group hbs-indent _hbs_indent_on_new_line
}
hook -group hbs-highlight global WinSetOption filetype=(?!hbs).* %{
rmhl hbs
rmhl html
}
hook global WinSetOption filetype=(?!hbs).* %{
rmhooks window hbs-indent
rmhooks window hbs-hooks
}