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driver: Make the redrawhook codepath conditional upon the memo= feature.

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Fixes #579 (zsh-autosuggestions interoperability).
Fixes #735 (ditto).

See https://github.com/zsh-users/zsh-syntax-highlighting/issues/579#issuecomment-650126055
See https://github.com/zsh-users/zsh-autosuggestions/issues/529#issuecomment-650481227
This commit is contained in:
Daniel Shahaf 2020-07-14 02:13:51 +00:00
parent 7b863fb413
commit 59cb9a560d
1 changed files with 11 additions and 1 deletions
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zsh-syntax-highlighting.zsh
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@ -403,7 +403,17 @@ _zsh_highlight_call_widget()
_zsh_highlight
}
if _zsh_highlight__function_callable_p add-zle-hook-widget
# Decide whether to use the zle-line-pre-redraw codepath (colloquially known as
# "feature/redrawhook", after the topic branch's name) or the legacy "bind all
# widgets" codepath.
#
# We use the new codepath under two conditions:
#
# 1. If it's available, which we check by testing for add-zle-hook-widget's availability.
#
# 2. If zsh has the memo= feature, which is required for interoperability reasons.
# See issues #579 and #735, and the issues referenced from them.
if (( zsh_highlight__memo_feature )) && _zsh_highlight__function_callable_p add-zle-hook-widget
then
autoload -U add-zle-hook-widget
_zsh_highlight__zle-line-finish() {