643 lines
25 KiB
Bash
643 lines
25 KiB
Bash
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#!/usr/bin/env zsh
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#
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# This is a clean-room implementation of the Fish[1] shell's history search
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# feature, where you can type in any part of any previously entered command
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# and press the UP and DOWN arrow keys to cycle through the matching commands.
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#
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#-----------------------------------------------------------------------------
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# Usage
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#-----------------------------------------------------------------------------
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#
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# 1. Load this script into your interactive ZSH session:
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#
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# % source history-substring-search.zsh
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#
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# If you want to use the zsh-syntax-highlighting[6] script along with this
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# script, then make sure that you load it *before* you load this script:
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#
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# % source zsh-syntax-highlighting.zsh
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# % source history-substring-search.zsh
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#
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# 2. Type any part of any previous command and then:
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#
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# * Press the UP arrow key to select the nearest command that (1) contains
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# your query and (2) is older than the current command in the command
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# history.
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#
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# * Press the DOWN arrow key to select the nearest command that (1)
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# contains your query and (2) is newer than the current command in the
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# command history.
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#
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# * Press ^U (the Control and U keys simultaneously) to abort the search.
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#
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# 3. If a matching command spans more than one line of text, press the LEFT
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# arrow key to move the cursor away from the end of the command, and then:
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#
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# * Press the UP arrow key to move the cursor to the line above. When the
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# cursor reaches the first line of the command, pressing the UP arrow
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# key again will cause this script to perform another search.
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#
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# * Press the DOWN arrow key to move the cursor to the line below. When
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# the cursor reaches the last line of the command, pressing the DOWN
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# arrow key again will cause this script to perform another search.
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#
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#-----------------------------------------------------------------------------
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# Configuration
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#-----------------------------------------------------------------------------
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#
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# This script defines the following global variables. You may override their
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# default values only after having loaded this script into your ZSH session.
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#
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# * HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND is a global variable that defines
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# how the query should be highlighted inside a matching command. Its default
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# value causes this script to highlight using bold, white text on a magenta
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# background. See the "Character Highlighting" section in the zshzle(1) man
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# page to learn about the kinds of values you may assign to this variable.
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#
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# * HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND is a global variable that
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# defines how the query should be highlighted when no commands in the
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# history match it. Its default value causes this script to highlight using
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# bold, white text on a red background. See the "Character Highlighting"
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# section in the zshzle(1) man page to learn about the kinds of values you
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# may assign to this variable.
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#
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# * HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS is a global variable that defines
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# how the command history will be searched for your query. Its default value
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# causes this script to perform a case-insensitive search. See the "Globbing
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# Flags" section in the zshexpn(1) man page to learn about the kinds of
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# values you may assign to this variable.
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#
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#-----------------------------------------------------------------------------
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# History
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#-----------------------------------------------------------------------------
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#
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# This script was originally written by Peter Stephenson[2], who published it
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# to the ZSH users mailing list (thereby making it public domain) in September
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# 2009. It was later revised by Guido van Steen and released under the BSD
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# license (see below) as part of the fizsh[3] project in January 2011.
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#
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# It was later extracted from fizsh[3] release 1.0.1, refactored heavily, and
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# repackaged as both an oh-my-zsh plugin[4] and as an independently loadable
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# ZSH script[5] by Suraj N. Kurapati in 2011.
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#
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# It was further developed[4] by Guido van Steen, Suraj N. Kurapati, Sorin
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# Ionescu, and Vincent Guerci in 2011.
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#
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# [1]: http://fishshell.com
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# [2]: http://www.zsh.org/mla/users/2009/msg00818.html
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# [3]: http://sourceforge.net/projects/fizsh/
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# [4]: https://github.com/robbyrussell/oh-my-zsh/pull/215
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# [5]: https://github.com/sunaku/zsh-history-substring-search
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# [6]: https://github.com/nicoulaj/zsh-syntax-highlighting
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#
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##############################################################################
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#
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# Copyright (c) 2009 Peter Stephenson
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# Copyright (c) 2011 Guido van Steen
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# Copyright (c) 2011 Suraj N. Kurapati
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# Copyright (c) 2011 Sorin Ionescu
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# Copyright (c) 2011 Vincent Guerci
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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#
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# * Neither the name of the FIZSH nor the names of its contributors
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# may be used to endorse or promote products derived from this
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# software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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##############################################################################
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#-----------------------------------------------------------------------------
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# configuration variables
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#-----------------------------------------------------------------------------
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HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND='bg=magenta,fg=white,bold'
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HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND='bg=red,fg=white,bold'
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HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS='i'
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#-----------------------------------------------------------------------------
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# the main ZLE widgets
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#-----------------------------------------------------------------------------
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function history-substring-search-up() {
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_history-substring-search-begin
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_history-substring-search-up-history ||
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_history-substring-search-up-buffer ||
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_history-substring-search-up-search
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_history-substring-search-end
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}
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function history-substring-search-down() {
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_history-substring-search-begin
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_history-substring-search-down-history ||
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_history-substring-search-down-buffer ||
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_history-substring-search-down-search
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_history-substring-search-end
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}
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zle -N history-substring-search-up
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zle -N history-substring-search-down
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bindkey '\e[A' history-substring-search-up
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bindkey '\e[B' history-substring-search-down
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#-----------------------------------------------------------------------------
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# implementation details
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#-----------------------------------------------------------------------------
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setopt extendedglob
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zmodload -F zsh/parameter
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#
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# We have to "override" some keys and widgets if the
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# zsh-syntax-highlighting plugin has not been loaded:
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#
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# https://github.com/nicoulaj/zsh-syntax-highlighting
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#
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if [[ $+functions[_zsh_highlight] -eq 0 ]]; then
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#
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# Dummy implementation of _zsh_highlight()
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# that simply removes existing highlights
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#
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function _zsh_highlight() {
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region_highlight=()
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}
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#
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# Remove existing highlights when the user
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# inserts printable characters into $BUFFER
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#
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function ordinary-key-press() {
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if [[ $KEYS == [[:print:]] ]]; then
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region_highlight=()
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fi
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zle .self-insert
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}
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zle -N self-insert ordinary-key-press
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#
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# Override ZLE widgets to invoke _zsh_highlight()
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#
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# https://github.com/nicoulaj/zsh-syntax-highlighting/blob/
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# bb7fcb79fad797a40077bebaf6f4e4a93c9d8163/zsh-syntax-highlighting.zsh#L121
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#
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#--------------8<-------------------8<-------------------8<-----------------
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#
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# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * Neither the name of the zsh-syntax-highlighting contributors nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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# Load ZSH module zsh/zleparameter, needed to override user defined widgets.
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zmodload zsh/zleparameter 2>/dev/null || {
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echo 'zsh-syntax-highlighting: failed loading zsh/zleparameter, exiting.' >&2
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return -1
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}
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# Override ZLE widgets to make them invoke _zsh_highlight.
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for event in ${${(f)"$(zle -la)"}:#(_*|orig-*|.run-help|.which-command)}; do
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if [[ "$widgets[$event]" == completion:* ]]; then
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eval "zle -C orig-$event ${${${widgets[$event]}#*:}/:/ } ; $event() { builtin zle orig-$event && _zsh_highlight } ; zle -N $event"
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else
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case $event in
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accept-and-menu-complete)
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eval "$event() { builtin zle .$event && _zsh_highlight } ; zle -N $event"
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;;
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# The following widgets should NOT remove any previously
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# applied highlighting. Therefore we do not remap them.
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.forward-char|.backward-char|.up-line-or-history|.down-line-or-history)
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;;
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.*)
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clean_event=$event[2,${#event}] # Remove the leading dot in the event name
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case ${widgets[$clean_event]-} in
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(completion|user):*)
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;;
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*)
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eval "$clean_event() { builtin zle $event && _zsh_highlight } ; zle -N $clean_event"
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;;
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esac
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;;
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*)
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;;
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esac
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fi
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done
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unset event clean_event
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#-------------->8------------------->8------------------->8-----------------
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fi
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function _history-substring-search-begin() {
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_history_substring_search_move_cursor_eol=false
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_history_substring_search_query_highlight=
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#
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# Continue using the previous $_history_substring_search_result by default,
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# unless the current query was cleared or a new/different query was entered.
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#
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if [[ -z $BUFFER || $BUFFER != $_history_substring_search_result ]]; then
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#
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# For the purpose of highlighting we will also keep
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# a version without doubly-escaped meta characters.
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#
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_history_substring_search_query=$BUFFER
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#
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# $BUFFER contains the text that is in the command-line currently.
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# we put an extra "\\" before meta characters such as "\(" and "\)",
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# so that they become "\\\(" and "\\\)".
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#
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_history_substring_search_query_escaped=${BUFFER//(#m)[\][()|\\*?#<>~^]/\\$MATCH}
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#
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# Find all occurrences of the search query in the history file.
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#
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# (k) turns it an array of line numbers.
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#
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# (on) seems to remove duplicates, which are default
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# options. They can be turned off by (ON).
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#
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_history_substring_search_matches=(${(kon)history[(R)(#$HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS)*${_history_substring_search_query_escaped}*]})
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#
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# Define the range of values that $_history_substring_search_match_index
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# can take: [0, $_history_substring_search_matches_count_plus].
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#
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_history_substring_search_matches_count=$#_history_substring_search_matches
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_history_substring_search_matches_count_plus=$(( _history_substring_search_matches_count + 1 ))
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_history_substring_search_matches_count_sans=$(( _history_substring_search_matches_count - 1 ))
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#
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# If $_history_substring_search_match_index is equal to
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# $_history_substring_search_matches_count_plus, this indicates that we
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# are beyond the beginning of $_history_substring_search_matches.
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#
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# If $_history_substring_search_match_index is equal to 0, this indicates
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# that we are beyond the end of $_history_substring_search_matches.
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#
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# If we have initially pressed "up" we have to initialize
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# $_history_substring_search_match_index to
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# $_history_substring_search_matches_count_plus so that it will be
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# decreased to $_history_substring_search_matches_count.
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#
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# If we have initially pressed "down" we have to initialize
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# $_history_substring_search_match_index to
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# $_history_substring_search_matches_count so that it will be increased to
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# $_history_substring_search_matches_count_plus.
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#
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if [[ $WIDGET == history-substring-search-down ]]; then
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_history_substring_search_match_index=$_history_substring_search_matches_count
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else
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_history_substring_search_match_index=$_history_substring_search_matches_count_plus
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fi
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fi
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}
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function _history-substring-search-end() {
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_history_substring_search_result=$BUFFER
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# move the cursor to the end of the command line
|
||
|
|
if [[ $_history_substring_search_move_cursor_eol == true ]]; then
|
||
|
|
CURSOR=${#BUFFER}
|
||
|
|
fi
|
||
|
|
|
||
|
|
# highlight command line using zsh-syntax-highlighting
|
||
|
|
_zsh_highlight
|
||
|
|
|
||
|
|
# highlight the search query inside the command line
|
||
|
|
if [[ -n $_history_substring_search_query_highlight && -n $_history_substring_search_query ]]; then
|
||
|
|
#
|
||
|
|
# The following expression yields a variable $MBEGIN, which
|
||
|
|
# indicates the begin position + 1 of the first occurrence
|
||
|
|
# of _history_substring_search_query_escaped in $BUFFER.
|
||
|
|
#
|
||
|
|
: ${(S)BUFFER##(#m$HISTORY_SUBSTRING_SEARCH_GLOBBING_FLAGS)($_history_substring_search_query##)}
|
||
|
|
local begin=$(( MBEGIN - 1 ))
|
||
|
|
local end=$(( begin + $#_history_substring_search_query ))
|
||
|
|
region_highlight+=("$begin $end $_history_substring_search_query_highlight")
|
||
|
|
fi
|
||
|
|
|
||
|
|
# For debugging purposes:
|
||
|
|
# zle -R "mn: "$_history_substring_search_match_index" m#: "${#_history_substring_search_matches}
|
||
|
|
# read -k -t 200 && zle -U $REPLY
|
||
|
|
|
||
|
|
# Exit successfully from the history-substring-search-* widgets.
|
||
|
|
true
|
||
|
|
}
|
||
|
|
|
||
|
|
function _history-substring-search-up-buffer() {
|
||
|
|
#
|
||
|
|
# Check if the UP arrow was pressed to move the cursor within a multi-line
|
||
|
|
# buffer. This amounts to three tests:
|
||
|
|
#
|
||
|
|
# 1. $#buflines -gt 1.
|
||
|
|
#
|
||
|
|
# 2. $CURSOR -ne $#BUFFER.
|
||
|
|
#
|
||
|
|
# 3. Check if we are on the first line of the current multi-line buffer.
|
||
|
|
# If so, pressing UP would amount to leaving the multi-line buffer.
|
||
|
|
#
|
||
|
|
# We check this by adding an extra "x" to $LBUFFER, which makes
|
||
|
|
# sure that xlbuflines is always equal to the number of lines
|
||
|
|
# until $CURSOR (including the line with the cursor on it).
|
||
|
|
#
|
||
|
|
local buflines XLBUFFER xlbuflines
|
||
|
|
buflines=(${(f)BUFFER})
|
||
|
|
XLBUFFER=$LBUFFER"x"
|
||
|
|
xlbuflines=(${(f)XLBUFFER})
|
||
|
|
|
||
|
|
if [[ $#buflines -gt 1 && $CURSOR -ne $#BUFFER && $#xlbuflines -ne 1 ]]; then
|
||
|
|
zle up-line-or-history
|
||
|
|
return true
|
||
|
|
fi
|
||
|
|
|
||
|
|
false
|
||
|
|
}
|
||
|
|
|
||
|
|
function _history-substring-search-down-buffer() {
|
||
|
|
#
|
||
|
|
# Check if the DOWN arrow was pressed to move the cursor within a multi-line
|
||
|
|
# buffer. This amounts to three tests:
|
||
|
|
#
|
||
|
|
# 1. $#buflines -gt 1.
|
||
|
|
#
|
||
|
|
# 2. $CURSOR -ne $#BUFFER.
|
||
|
|
#
|
||
|
|
# 3. Check if we are on the last line of the current multi-line buffer.
|
||
|
|
# If so, pressing DOWN would amount to leaving the multi-line buffer.
|
||
|
|
#
|
||
|
|
# We check this by adding an extra "x" to $RBUFFER, which makes
|
||
|
|
# sure that xrbuflines is always equal to the number of lines
|
||
|
|
# from $CURSOR (including the line with the cursor on it).
|
||
|
|
#
|
||
|
|
local buflines XRBUFFER xrbuflines
|
||
|
|
buflines=(${(f)BUFFER})
|
||
|
|
XRBUFFER="x"$RBUFFER
|
||
|
|
xrbuflines=(${(f)XRBUFFER})
|
||
|
|
|
||
|
|
if [[ $#buflines -gt 1 && $CURSOR -ne $#BUFFER && $#xrbuflines -ne 1 ]]; then
|
||
|
|
zle down-line-or-history
|
||
|
|
return true
|
||
|
|
fi
|
||
|
|
|
||
|
|
false
|
||
|
|
}
|
||
|
|
|
||
|
|
function _history-substring-search-up-history() {
|
||
|
|
#
|
||
|
|
# Behave like up in ZSH, except clear the $BUFFER
|
||
|
|
# when beginning of history is reached like in Fish.
|
||
|
|
#
|
||
|
|
if [[ -z $_history_substring_search_query ]]; then
|
||
|
|
|
||
|
|
# we have reached the absolute top of history
|
||
|
|
if [[ $HISTNO -eq 1 ]]; then
|
||
|
|
BUFFER=
|
||
|
|
|
||
|
|
# going up from somewhere below the top of history
|
||
|
|
else
|
||
|
|
zle up-history
|
||
|
|
fi
|
||
|
|
|
||
|
|
return true
|
||
|
|
fi
|
||
|
|
|
||
|
|
false
|
||
|
|
}
|
||
|
|
|
||
|
|
function _history-substring-search-down-history() {
|
||
|
|
#
|
||
|
|
# Behave like down-history in ZSH, except clear the
|
||
|
|
# $BUFFER when end of history is reached like in Fish.
|
||
|
|
#
|
||
|
|
if [[ -z $_history_substring_search_query ]]; then
|
||
|
|
|
||
|
|
# going down from the absolute top of history
|
||
|
|
if [[ $HISTNO -eq 1 && -z $BUFFER ]]; then
|
||
|
|
BUFFER=${history[1]}
|
||
|
|
_history_substring_search_move_cursor_eol=true
|
||
|
|
|
||
|
|
# going down from somewhere above the bottom of history
|
||
|
|
else
|
||
|
|
zle down-history
|
||
|
|
fi
|
||
|
|
|
||
|
|
return true
|
||
|
|
fi
|
||
|
|
|
||
|
|
false
|
||
|
|
}
|
||
|
|
|
||
|
|
function _history-substring-search-up-search() {
|
||
|
|
_history_substring_search_move_cursor_eol=true
|
||
|
|
|
||
|
|
#
|
||
|
|
# Highlight matches during history-substring-up-search:
|
||
|
|
#
|
||
|
|
# The following constants have been initialized in
|
||
|
|
# _history-substring-search-up/down-search():
|
||
|
|
#
|
||
|
|
# $_history_substring_search_matches is the current list of matches
|
||
|
|
# $_history_substring_search_matches_count is the current number of matches
|
||
|
|
# $_history_substring_search_matches_count_plus is the current number of matches + 1
|
||
|
|
# $_history_substring_search_matches_count_sans is the current number of matches - 1
|
||
|
|
# $_history_substring_search_match_index is the index of the current match
|
||
|
|
#
|
||
|
|
# The range of values that $_history_substring_search_match_index can take
|
||
|
|
# is: [0, $_history_substring_search_matches_count_plus]. A value of 0
|
||
|
|
# indicates that we are beyond the end of
|
||
|
|
# $_history_substring_search_matches. A value of
|
||
|
|
# $_history_substring_search_matches_count_plus indicates that we are beyond
|
||
|
|
# the beginning of $_history_substring_search_matches.
|
||
|
|
#
|
||
|
|
# In _history-substring-search-up-search() the initial value of
|
||
|
|
# $_history_substring_search_match_index is
|
||
|
|
# $_history_substring_search_matches_count_plus. This value is set in
|
||
|
|
# _history-substring-search-begin(). _history-substring-search-up-search()
|
||
|
|
# will initially decrease it to $_history_substring_search_matches_count.
|
||
|
|
#
|
||
|
|
if [[ $_history_substring_search_match_index -ge 2 ]]; then
|
||
|
|
#
|
||
|
|
# Highlight the next match:
|
||
|
|
#
|
||
|
|
# 1. Decrease the value of $_history_substring_search_match_index.
|
||
|
|
#
|
||
|
|
# 2. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
# to highlight the current buffer.
|
||
|
|
#
|
||
|
|
(( _history_substring_search_match_index-- ))
|
||
|
|
BUFFER=$history[$_history_substring_search_matches[$_history_substring_search_match_index]]
|
||
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
|
||
|
|
elif [[ $_history_substring_search_match_index -eq 1 ]]; then
|
||
|
|
#
|
||
|
|
# We will move beyond the end of $_history_substring_search_matches:
|
||
|
|
#
|
||
|
|
# 1. Decrease the value of $_history_substring_search_match_index.
|
||
|
|
#
|
||
|
|
# 2. Save the current buffer in $_history_substring_search_old_buffer,
|
||
|
|
# so that it can be retrieved by
|
||
|
|
# _history-substring-search-down-search() later.
|
||
|
|
#
|
||
|
|
# 3. Make $BUFFER equal to $_history_substring_search_query.
|
||
|
|
#
|
||
|
|
# 4. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
|
||
|
|
# to highlight the current buffer.
|
||
|
|
#
|
||
|
|
(( _history_substring_search_match_index-- ))
|
||
|
|
_history_substring_search_old_buffer=$BUFFER
|
||
|
|
BUFFER=$_history_substring_search_query
|
||
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
|
||
|
|
|
||
|
|
elif [[ $_history_substring_search_match_index -eq $_history_substring_search_matches_count_plus ]]; then
|
||
|
|
#
|
||
|
|
# We were beyond the beginning of $_history_substring_search_matches but
|
||
|
|
# UP makes us move back to $_history_substring_search_matches:
|
||
|
|
#
|
||
|
|
# 1. Decrease the value of $_history_substring_search_match_index.
|
||
|
|
#
|
||
|
|
# 2. Restore $BUFFER from $_history_substring_search_old_buffer.
|
||
|
|
#
|
||
|
|
# 3. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
# to highlight the current buffer.
|
||
|
|
#
|
||
|
|
(( _history_substring_search_match_index-- ))
|
||
|
|
BUFFER=$_history_substring_search_old_buffer
|
||
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
function _history-substring-search-down-search() {
|
||
|
|
_history_substring_search_move_cursor_eol=true
|
||
|
|
|
||
|
|
#
|
||
|
|
# Highlight matches during history-substring-up-search:
|
||
|
|
#
|
||
|
|
# The following constants have been initialized in
|
||
|
|
# _history-substring-search-up/down-search():
|
||
|
|
#
|
||
|
|
# $_history_substring_search_matches is the current list of matches
|
||
|
|
# $_history_substring_search_matches_count is the current number of matches
|
||
|
|
# $_history_substring_search_matches_count_plus is the current number of matches + 1
|
||
|
|
# $_history_substring_search_matches_count_sans is the current number of matches - 1
|
||
|
|
# $_history_substring_search_match_index is the index of the current match
|
||
|
|
#
|
||
|
|
# The range of values that $_history_substring_search_match_index can take
|
||
|
|
# is: [0, $_history_substring_search_matches_count_plus]. A value of 0
|
||
|
|
# indicates that we are beyond the end of
|
||
|
|
# $_history_substring_search_matches. A value of
|
||
|
|
# $_history_substring_search_matches_count_plus indicates that we are beyond
|
||
|
|
# the beginning of $_history_substring_search_matches.
|
||
|
|
#
|
||
|
|
# In _history-substring-search-down-search() the initial value of
|
||
|
|
# $_history_substring_search_match_index is
|
||
|
|
# $_history_substring_search_matches_count. This value is set in
|
||
|
|
# _history-substring-search-begin().
|
||
|
|
# _history-substring-search-down-search() will initially increase it to
|
||
|
|
# $_history_substring_search_matches_count_plus.
|
||
|
|
#
|
||
|
|
if [[ $_history_substring_search_match_index -le $_history_substring_search_matches_count_sans ]]; then
|
||
|
|
#
|
||
|
|
# Highlight the next match:
|
||
|
|
#
|
||
|
|
# 1. Increase $_history_substring_search_match_index by 1.
|
||
|
|
#
|
||
|
|
# 2. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
# to highlight the current buffer.
|
||
|
|
#
|
||
|
|
(( _history_substring_search_match_index++ ))
|
||
|
|
BUFFER=$history[$_history_substring_search_matches[$_history_substring_search_match_index]]
|
||
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
|
||
|
|
elif [[ $_history_substring_search_match_index -eq $_history_substring_search_matches_count ]]; then
|
||
|
|
#
|
||
|
|
# We will move beyond the beginning of $_history_substring_search_matches:
|
||
|
|
#
|
||
|
|
# 1. Increase $_history_substring_search_match_index by 1.
|
||
|
|
#
|
||
|
|
# 2. Save the current buffer in $_history_substring_search_old_buffer, so
|
||
|
|
# that it can be retrieved by _history-substring-search-up-search()
|
||
|
|
# later.
|
||
|
|
#
|
||
|
|
# 3. Make $BUFFER equal to $_history_substring_search_query.
|
||
|
|
#
|
||
|
|
# 4. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
|
||
|
|
# to highlight the current buffer.
|
||
|
|
#
|
||
|
|
(( _history_substring_search_match_index++ ))
|
||
|
|
_history_substring_search_old_buffer=$BUFFER
|
||
|
|
BUFFER=$_history_substring_search_query
|
||
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_NOT_FOUND
|
||
|
|
|
||
|
|
elif [[ $_history_substring_search_match_index -eq 0 ]]; then
|
||
|
|
#
|
||
|
|
# We were beyond the end of $_history_substring_search_matches but DOWN
|
||
|
|
# makes us move back to the $_history_substring_search_matches:
|
||
|
|
#
|
||
|
|
# 1. Increase $_history_substring_search_match_index by 1.
|
||
|
|
#
|
||
|
|
# 2. Restore $BUFFER from $_history_substring_search_old_buffer.
|
||
|
|
#
|
||
|
|
# 3. Use $HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
# to highlight the current buffer.
|
||
|
|
#
|
||
|
|
(( _history_substring_search_match_index++ ))
|
||
|
|
BUFFER=$_history_substring_search_old_buffer
|
||
|
|
_history_substring_search_query_highlight=$HISTORY_SUBSTRING_SEARCH_HIGHLIGHT_FOUND
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
|
||
|
|
# vim: ft=zsh sw=2 ts=2 et
|