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Add match_prev_cmd strategy.
A new suggestion strategy 'match_prev_cmd' is available. This is a bit more context aware variaton on the default strategy. The suggestion will be: - The newest history entry that matches the current prefix, AND - Whose preceding history entry also matches the previously executed command. See src/strategies/match_prev_cmd.zsh for an example.
This commit is contained in:
Geza Lore
Eric Freese
parent
976acc708c
commit
73f774bd5d
122
script/test-strategy-match-prev-cmd.zsh
Executable file
122
script/test-strategy-match-prev-cmd.zsh
Executable file
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@ -0,0 +1,122 @@
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#!/usr/bin/env zsh
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SCRIPT_DIR=$(dirname "$0")
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TEST_DIR=$SCRIPT_DIR/../test
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DIST_DIR=$SCRIPT_DIR/../
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# Use stub.sh for stubbing/mocking
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source $TEST_DIR/stub-1.0.2.sh
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source $DIST_DIR/zsh-autosuggestions.zsh
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#--------------------------------------------------------------------#
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# Match Previous Command Suggestion Strategy #
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#--------------------------------------------------------------------#
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TMPHIST_FILE=/tmp/zsh-autosuggestions-test-tmp-hist
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HISTSIZE=0 # Clear history
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HISTSIZE=100
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cat > $TMPHIST_FILE <<-EOH
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one
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two
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three
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four
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five
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six
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seven
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eight
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nine
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ten
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eleven
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EOH
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echo >> $TMPHIST_FILE
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fc -R $TMPHIST_FILE
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rm $TMPHIST_FILE
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ZSH_AUTOSUGGEST_STRATEGY=match_prev_cmd
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testNoMatchPrevIsOne() {
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stub_and_echo _zsh_autosuggest_prev_command "one"
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assertEquals \
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"Did not pick correct suggestion for prefix 'garbage' after 'one'" \
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"" \
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"$(_zsh_autosuggest_suggestion garbage)"
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}
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testMatchPrevIsOne() {
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stub_and_echo _zsh_autosuggest_prev_command "one"
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assertEquals \
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"Did not pick correct suggestion for prefix 'o' after 'one'" \
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"one" \
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"$(_zsh_autosuggest_suggestion o)"
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assertEquals \
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"Did not pick correct suggestion for prefix 't' after 'one'" \
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"two" \
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"$(_zsh_autosuggest_suggestion t)"
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assertEquals \
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"Did not pick correct suggestion for prefix 'th' after 'one'" \
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"three" \
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"$(_zsh_autosuggest_suggestion th)"
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assertEquals \
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"Did not pick correct suggestion for prefix 'f' after 'one'" \
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"five" \
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"$(_zsh_autosuggest_suggestion f)"
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assertEquals \
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"Did not pick correct suggestion for prefix 'fo' after 'one" \
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"four" \
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"$(_zsh_autosuggest_suggestion fo)"
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}
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testNoMatchPrevIsTwo() {
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stub_and_echo _zsh_autosuggest_prev_command "two"
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assertEquals \
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"Did not pick correct suggestion for prefix 'garbage' after 'two'" \
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"" \
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"$(_zsh_autosuggest_suggestion garbage)"
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}
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testMatchPrevIsTwo() {
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stub_and_echo _zsh_autosuggest_prev_command "two"
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assertEquals \
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"Did not pick correct suggestion for prefix 'o' after 'two'" \
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"one" \
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"$(_zsh_autosuggest_suggestion o)"
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assertEquals \
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"Did not pick correct suggestion for prefix 't' after 'two'" \
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"three" \
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"$(_zsh_autosuggest_suggestion t)"
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assertEquals \
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"Did not pick correct suggestion for prefix 'tw' after 'two'" \
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"two" \
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"$(_zsh_autosuggest_suggestion tw)"
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assertEquals \
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"Did not pick correct suggestion for prefix 'f' after 'two'" \
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"five" \
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"$(_zsh_autosuggest_suggestion f)"
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assertEquals \
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"Did not pick correct suggestion for prefix 'fo' after 'two" \
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"four" \
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"$(_zsh_autosuggest_suggestion fo)"
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}
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setopt shwordsplit
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SHUNIT_PARENT=$0
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source $TEST_DIR/shunit2-2.1.6/src/shunit2
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50
src/strategies/match_prev_cmd.zsh
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50
src/strategies/match_prev_cmd.zsh
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@ -0,0 +1,50 @@
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#--------------------------------------------------------------------#
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# Match Previous Command Suggestion Strategy #
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#--------------------------------------------------------------------#
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# Suggests the most recent history item that matches the given
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# prefix, and whose preceding history item also matches the most
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# recently executed command.
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#
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# For example, if your have just executed:
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# pwd
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# ls foo
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# ls bar
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# pwd
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# And then you start typing 'ls', then the suggestion will be 'ls foo',
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# rather than 'ls bar', as your most recently executed command (pwd)
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# was followed by 'ls foo' on it's previous invocation.
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#
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_zsh_autosuggest_strategy_match_prev_cmd() {
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local prefix="$(_zsh_autosuggest_escape_command_prefix "$1")"
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# Get all history event numbers that correspond to history
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# entries that match pattern $prefix*
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local history_match_keys
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history_match_keys=(${(k)history[(R)$prefix*]})
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# By default we use the first history number (most recent history entry)
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local histkey="${history_match_keys[1]}"
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# Get the previously executed command
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local prev_cmd="$(_zsh_autosuggest_prev_command)"
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prev_cmd="$(_zsh_autosuggest_escape_command_prefix $prev_cmd)"
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# Iterate up to the first 200 history event numbers that match $prefix
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for key in "${(@)history_match_keys[1,200]}"; do
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# Stop if we ran out of history
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[[ $key -gt 1 ]] || break
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# See if the history entry preceding the suggestion matches the
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# previous command, and use it if it does
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if [[ "${history[$((key - 1))]}" == $prev_cmd ]]; then
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histkey="$key"
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break
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fi
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done
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# Echo the matched history entry
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echo -E "$history[$histkey]"
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}
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@ -19,3 +19,8 @@ _zsh_autosuggest_escape_command_prefix() {
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# Escape special chars in the string (requires EXTENDED_GLOB)
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echo -E "${1//(#m)[\\()\[\]|*?]/\\$MATCH}"
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}
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# Get the previously executed command (hookable for testing)
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_zsh_autosuggest_prev_command() {
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echo -E "${history[$((HISTCMD-1))]}"
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}
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@ -330,6 +330,11 @@ _zsh_autosuggest_escape_command_prefix() {
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echo -E "${1//(#m)[\\()\[\]|*?]/\\$MATCH}"
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}
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# Get the previously executed command (hookable for testing)
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_zsh_autosuggest_prev_command() {
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echo -E "${history[$((HISTCMD-1))]}"
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}
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#--------------------------------------------------------------------#
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# Default Suggestion Strategy #
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#--------------------------------------------------------------------#
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@ -347,6 +352,56 @@ _zsh_autosuggest_strategy_default() {
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echo -E "${history[$histkey]}"
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}
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#--------------------------------------------------------------------#
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# Match Previous Command Suggestion Strategy #
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#--------------------------------------------------------------------#
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# Suggests the most recent history item that matches the given
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# prefix, and whose preceding history item also matches the most
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# recently executed command.
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#
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# For example, if your have just executed:
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# pwd
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# ls foo
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# ls bar
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# pwd
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# And then you start typing 'ls', then the suggestion will be 'ls foo',
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# rather than 'ls bar', as your most recently executed command (pwd)
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# was followed by 'ls foo' on it's previous invocation.
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#
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_zsh_autosuggest_strategy_match_prev_cmd() {
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local prefix="$(_zsh_autosuggest_escape_command_prefix "$1")"
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# Get all history event numbers that correspond to history
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# entries that match pattern $prefix*
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local history_match_keys
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history_match_keys=(${(k)history[(R)$prefix*]})
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# By default we use the first history number (most recent history entry)
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local histkey="${history_match_keys[1]}"
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# Get the previously executed command
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local prev_cmd="$(_zsh_autosuggest_prev_command)"
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prev_cmd="$(_zsh_autosuggest_escape_command_prefix $prev_cmd)"
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# Iterate up to the first 200 history event numbers that match $prefix
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for key in "${(@)history_match_keys[1,200]}"; do
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# Stop if we ran out of history
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[[ $key -gt 1 ]] || break
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# See if the history entry preceding the suggestion matches the
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# previous command, and use it if it does
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if [[ "${history[$((key - 1))]}" == $prev_cmd ]]; then
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histkey="$key"
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break
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fi
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done
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# Echo the matched history entry
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echo -E "$history[$histkey]"
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}
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#--------------------------------------------------------------------#
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# Start #
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#--------------------------------------------------------------------#
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