mirrors/zsh-history-substring-search
1
0
Fork 0
mirror of https://github.com/zsh-users/zsh-history-substring-search synced 2024-09-20 16:19:04 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

Add option to ensure unique search results.

Browse source 
If HISTORY_SUBSTRING_SEARCH_ENSURE_UNIQUE is set to a non-empty string,
then all displayed search results will be unique even if the shell
option HIST_IGNORE_ALL_DUPS is not set.
This commit is contained in:
Geza Lore 2016-03-05 14:51:26 +00:00
parent 7444ca5783
commit 352943873d
1 changed files with 45 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
zsh-history-substring-search.zsh
View file

@ -44,6 +44,7 @@
HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND='bg=magenta,fg=white,bold'
HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND='bg=red,fg=white,bold'
HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS='i'
unset HISTORY_SUBSTRING_SEARCH_ENSURE_UNIQUE
#-----------------------------------------------------------------------------
# the main ZLE widgets
@ -219,6 +220,50 @@ _history-substring-search-begin() {
# matching history entry is at the head of the list.
#
_history_substring_search_matches=(${(k)history[(R)(#$HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS)*${escaped_query}*]})
#
# If HISTORY_SUBSTRING_SEARCH_ENSURE_UNIQUE is set to a non-empty value,
# then ensure that only unique matches are presented to the user.
# When HIST_IGNORE_ALL_DUPS is set, ZSH already ensures a unique history,
# so in this case we do not need to do anything.
#
if [[ ! -o HIST_IGNORE_ALL_DUPS && -n "$HISTORY_SUBSTRING_SEARCH_ENSURE_UNIQUE" ]]; then
#
# We use an associative array (filter) as a 'set' data structure to
# collect only unique matches. If an entry (key) is already in the
# set (non-empty value), then we have already seen it before and will
# ignore it. Otherwise we add the entry both to the set and the list
# of unique matches
#
local -A filter
local -a unique_matches
#
# Iterate through all matching history indices in younger to older
# order. This ensures that younger entries are always presented before
# older entries.
#
for index in $_history_substring_search_matches; do
#
# Get that actual history entry at this index
#
local entry=${history[$index]}
if [[ -z ${filter[$entry]} ]]; then
#
# This is a new unique entry. Add it to the filter and the list
# of unique matches.
#
filter[$entry]=1
unique_matches+=($index)
fi
done
#
# Use the unique entries only
#
_history_substring_search_matches=($unique_matches)
fi
fi
#