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Allow configuring to ignore history entries matching a pattern

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Set ZSH_AUTOSUGGEST_HISTORY_IGNORE to a glob pattern to have the history
and match_prev_cmd suggestion strategies never make suggestions matching
that pattern.

For example, set to "cd *" to never suggest any `cd` commands from
history (see issues #340 and #425). Or set to "?(#c50,)" to never
suggest anything 50 characters or longer (see issue #429).
This commit is contained in:
Eric Freese
2019-06-29 21:44:29 -06:00
parent 146020d9b2
commit b87a4972c8
6 changed files with 78 additions and 20 deletions
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13
src/strategies/history.zsh
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@@ -10,7 +10,7 @@ _zsh_autosuggest_strategy_history() {
# Reset options to defaults and enable LOCAL_OPTIONS
emulate -L zsh
# Enable globbing flags so that we can use (#m)
# Enable globbing flags so that we can use (#m) and (x~y) glob operator
setopt EXTENDED_GLOB
# Escape backslashes and all of the glob operators so we can use
@@ -19,7 +19,14 @@ _zsh_autosuggest_strategy_history() {
# TODO: Use (b) flag when we can drop support for zsh older than v5.0.8
local prefix="${1//(#m)[\\*?[\]<>()|^~#]/\\$MATCH}"
# Get the history items that match
# Get the history items that match the prefix, excluding those that match
# the ignore pattern
local pattern="$prefix*"
if [[ -n $ZSH_AUTOSUGGEST_HISTORY_IGNORE ]]; then
pattern="($pattern)~($ZSH_AUTOSUGGEST_HISTORY_IGNORE)"
fi
# Give the first history item matching the pattern as the suggestion
# - (r) subscript flag makes the pattern match on values
typeset -g suggestion="${history[(r)${prefix}*]}"
typeset -g suggestion="${history[(r)$pattern]}"
}

13
src/strategies/match_prev_cmd.zsh
View File

@@ -24,16 +24,23 @@ _zsh_autosuggest_strategy_match_prev_cmd() {
# Reset options to defaults and enable LOCAL_OPTIONS
emulate -L zsh
# Enable globbing flags so that we can use (#m)
# Enable globbing flags so that we can use (#m) and (x~y) glob operator
setopt EXTENDED_GLOB
# TODO: Use (b) flag when we can drop support for zsh older than v5.0.8
local prefix="${1//(#m)[\\*?[\]<>()|^~#]/\\$MATCH}"
# Get the history items that match the prefix, excluding those that match
# the ignore pattern
local pattern="$prefix*"
if [[ -n $ZSH_AUTOSUGGEST_HISTORY_IGNORE ]]; then
pattern="($pattern)~($ZSH_AUTOSUGGEST_HISTORY_IGNORE)"
fi
# Get all history event numbers that correspond to history
# entries that match pattern $prefix*
# entries that match the pattern
local history_match_keys
history_match_keys=(${(k)history[(R)$prefix*]})
history_match_keys=(${(k)history[(R)$~pattern]})
# By default we use the first history number (most recent history entry)
local histkey="${history_match_keys[1]}"