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driver: Rename highlighter entry points

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This updates the docs and the driver, in a manner backwards compatible with
existing highlighters.  (None of the highlighters are touched by this change,
yet tests continue to pass.)

Part of issue #329.
This commit is contained in:
Daniel Shahaf 2016-07-12 07:15:04 +00:00
parent 3409a2e4d2
commit a3d5dfcbda
2 changed files with 35 additions and 12 deletions
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18
docs/highlighters.md
View file

@ -54,16 +54,16 @@ To create your own `acme` highlighter:
* Create your script at
`highlighters/acme/acme-highlighter.zsh`.
* Implement the `_zsh_highlight_acme_highlighter_predicate` function.
* Implement the `_zsh_highlight_highlighter_acme_predicate` function.
This function must return 0 when the highlighter needs to be called and
non-zero otherwise, for example:
_zsh_highlight_acme_highlighter_predicate() {
_zsh_highlight_highlighter_acme_predicate() {
# Call this highlighter in SVN working copies
[[ -d .svn ]]
}
* Implement the `_zsh_highlight_acme_highlighter` function.
* Implement the `_zsh_highlight_highlighter_acme_paint` function.
This function does the actual syntax highlighting, by calling
`_zsh_highlight_add_highlight` with the start and end of the region to
be highlighted and the `ZSH_HIGHLIGHT_STYLES` key to use. Define the default
@ -73,13 +73,23 @@ To create your own `acme` highlighter:
: ${ZSH_HIGHLIGHT_STYLES[acme:aurora]:=fg=green}
_zsh_highlight_acme_highlighter() {
_zsh_highlight_highlighter_acme_paint() {
# Colorize the whole buffer with the 'aurora' style
_zsh_highlight_add_highlight 0 $#BUFFER acme:aurora
}
* Name your own functions and global variables `_zsh_highlight_acme_*`.
- In zsh-syntax-highlighting 0.4.0 and earlier, the entrypoints
`_zsh_highlight_highlighter_acme_predicate` and
`_zsh_highlight_highlighter_acme_paint`
were named
`_zsh_highlight_acme_highlighter_predicate` and
`_zsh_highlight_highlighter_acme_paint` respectively.
These names are still supported for backwards compatibility;
however, support for them will be removed in a a future major or minor release (v0.x.0 or v1.0.0).
* Activate your highlighter in `~/.zshrc`:
ZSH_HIGHLIGHT_HIGHLIGHTERS+=(acme)

29
zsh-syntax-highlighting.zsh
View file

@ -85,7 +85,7 @@ _zsh_highlight()
typeset -ga ${cache_place}
# If highlighter needs to be invoked
if "_zsh_highlight_${highlighter}_highlighter_predicate"; then
if "_zsh_highlight_highlighter_${highlighter}_predicate"; then
# save a copy, and cleanup region_highlight
region_highlight_copy=("${region_highlight[@]}")
@ -93,7 +93,7 @@ _zsh_highlight()
# Execute highlighter and save result
{
"_zsh_highlight_${highlighter}_highlighter"
"_zsh_highlight_highlighter_${highlighter}_paint"
} always {
eval "${cache_place}=(\"\${region_highlight[@]}\")"
}
@ -301,13 +301,26 @@ _zsh_highlight_load_highlighters()
local highlighter highlighter_dir
for highlighter_dir ($1/*/); do
highlighter="${highlighter_dir:t}"
[[ -f "$highlighter_dir/${highlighter}-highlighter.zsh" ]] && {
[[ -f "$highlighter_dir/${highlighter}-highlighter.zsh" ]] &&
. "$highlighter_dir/${highlighter}-highlighter.zsh"
type "_zsh_highlight_${highlighter}_highlighter" &> /dev/null &&
type "_zsh_highlight_${highlighter}_highlighter_predicate" &> /dev/null || {
print -r -- >&2 "zsh-syntax-highlighting: '${highlighter}' highlighter should define both required functions '_zsh_highlight_${highlighter}_highlighter' and '_zsh_highlight_${highlighter}_highlighter_predicate' in '${highlighter_dir}/${highlighter}-highlighter.zsh'."
}
}
if type "_zsh_highlight_highlighter_${highlighter}_paint" &> /dev/null &&
type "_zsh_highlight_highlighter_${highlighter}_predicate" &> /dev/null;
then
# New (0.5.0) function names
elif type "_zsh_highlight_${highlighter}_highlighter" &> /dev/null &&
type "_zsh_highlight_${highlighter}_highlighter_predicate" &> /dev/null;
then
# Old (0.4.x) function names
if false; then
# TODO: only show this warning for plugin authors/maintainers, not for end users
print -r -- >&2 "zsh-syntax-highlighting: warning: ${(qq)highlighter} highlighter uses deprecated entry point names; please ask its maintainer to update it: https://github.com/zsh-users/zsh-syntax-highlighting/issues/329"
fi
# Make it work.
eval "_zsh_highlight_highlighter_${(q)highlighter}_paint() { _zsh_highlight_${(q)highlighter}_highlighter \"\$@\" }"
eval "_zsh_highlight_highlighter_${(q)highlighter}_predicate() { _zsh_highlight_${(q)highlighter}_highlighter_predicate \"\$@\" }"
else
print -r -- >&2 "zsh-syntax-highlighting: '${highlighter}' highlighter should define both required functions '_zsh_highlight_highlighter_${highlighter}_paint' and '_zsh_highlight_highlighter_${highlighter}_predicate' in '${highlighter_dir}/${highlighter}-highlighter.zsh'."
fi
done
}