prezto/modules/utility/functions/wdiff

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#
# Highlights wdiff output.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
# Indrajit Raychaudhuri <irc@indrajit.com>
#
# function wdiff {
if zstyle -t ':prezto:module:utility:wdiff' color; then
if (( $+commands[wdiff] )); then
command wdiff \
--avoid-wraps \
--start-delete="$(print -n $FG[red])" \
--end-delete="$(print -n $FG[none])" \
--start-insert="$(print -n $FG[green])" \
--end-insert="$(print -n $FG[none])" \
"$@" \
| sed 's/^\(@@\( [+-][[:digit:]]*,[[:digit:]]*\)\{2\} @@\)$/;5;6m\10m/g'
elif (( $+commands[git] )); then
command git --no-pager diff --no-ext-diff --no-index --color=auto --color-words "$@"
else
command wdiff "$@"
fi
elif (( ! $+commands[wdiff] && $+commands[git] )); then
command git --no-pager diff --no-ext-diff --no-index --color=never "$@"
else
command wdiff "$@"
fi
# }