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259 lines
9.6 KiB
Markdown
259 lines
9.6 KiB
Markdown
[](./LICENSE)
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[](./LICENSE)
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[![Gitter][gitter-image]][gitter-link]
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# Zsh Navigation Tools
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Set of tools like `n-history` – multi-word history searcher, `n-cd` – directory
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bookmark manager, `n-kill` – `htop` like kill utility, and more. Based on
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`n-list`, a tool generating selectable curses-based list of elements that has
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access to current `Zsh` session, i.e. has broad capabilities to work together
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with it. Feature highlights include incremental multi-word searching, approximate
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matching, ANSI coloring, themes, unique mode, horizontal scroll, grepping, advanced
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history management and various integrations with `Zsh`.
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To use it, add `zsh-navigation-tools` to the plugins array in your zshrc file:
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```zsh
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plugins=(... zsh-navigation-tools)
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```
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Also check out [ Zsh Command Architect](https://github.com/zdharma-continuum/zsh-cmd-architect)
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and [Zconvey](https://github.com/zdharma-continuum/zconvey)
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Videos:
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- [https://youtu.be/QwZ8IJEgXRE](https://youtu.be/QwZ8IJEgXRE)
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- [https://youtu.be/DN9QqssAYB8](https://youtu.be/DN9QqssAYB8)
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Screenshots:
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## History Widget
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To have `n-history` as the incremental searcher bound to `Ctrl-R` copy `znt-*`
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files into the `*/site-functions` dir (unless you do single file install) and
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add:
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```zsh
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autoload znt-history-widget
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zle -N znt-history-widget
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bindkey "^R" znt-history-widget
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```
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to `.zshrc`. This is done automatically when using the installer, zgen, antigen
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or single file install. Two other widgets exist, `znt-cd-widget` and
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`znt-kill-widget`, they too can be assigned to key combinations (`autoload` is done
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in `.zshrc` so no need of it):
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```zsh
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zle -N znt-cd-widget
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bindkey "^B" znt-cd-widget
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zle -N znt-kill-widget
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bindkey "^Y" znt-kill-widget
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```
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## Introduction
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The tools are:
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- `n-aliases` - browses aliases, relegates editing to `vared`
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- `n-cd` - browses dirstack and bookmarked directories, allows to enter selected directory
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- `n-functions` - browses functions, relegates editing to `zed` or `vared`
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- `n-history` - browses history, allows to edit and run commands from it
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- `n-kill` - browses processes list, allows to send signal to selected process
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- `n-env` - browses environment, relegates editing to `vared`
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- `n-options` - browses options, allows to toggle their state
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- `n-panelize` - loads output of given command into the list for browsing
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All tools support horizontal scroll with `<`,`>`, `{`,`}`, `h`,`l` or left and right cursors. Other keys are:
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- `H`, `?` (from n-history) - run n-help
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- `Ctrl-R` - start n-history, the incremental, multi-keyword history searcher (Zsh binding)
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- `Ctrl-A` - rotate entered words (1+2+3 -> 3+1+2)
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- `Ctrl-F` - fix mode (approximate matching)
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- `Ctrl-L` - redraw of whole display
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- `Ctrl-T` - browse themes (next theme)
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- `Ctrl-G` - browse themes (previous theme)
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- `Ctrl-U` - half page up
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- `Ctrl-D` - half page down
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- `Ctrl-P` - previous element (also done with vim's k)
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- `Ctrl-N` - next element (also done with vim's j)
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- `[`, `]` - jump directory bookmarks in n-cd and typical signals in n-kill
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- `g`, `G` - beginning and end of the list
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- `/` - show incremental search
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- `F3` - show/hide incremental search
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- `Esc` - exit incremental search, clearing filter
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- `Ctrl-W` (in incremental search) - delete whole word
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- `Ctrl-K` (in incremental search) - delete whole line
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- `Ctrl-O`, `o` - enter uniq mode (no duplicate lines)
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- `Ctrl-E`, `e` - edit private history (when in private history view)
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- `F1` - (in n-history) - switch view
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- `F2`, `Ctrl-X`, `Ctrl-/` - search predefined keywords (defined in config files)
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## Configuration
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`ZNT` has configuration files located in `~/.config/znt`. The files are:
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```
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n-aliases.conf
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n-cd.conf
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n-env.conf
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n-functions.conf
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n-history.conf
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n-kill.conf
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n-list.conf
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n-options.conf
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n-panelize.conf
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```
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`n-list.conf` contains main configuration variables:
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```zsh
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# Should the list (text, borders) be drawn in bold
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local bold=0
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# Main color pair (foreground/background)
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local colorpair="white/black"
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# Should draw the border?
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local border=1
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# Combinations of colors to try out with Ctrl-T and Ctrl-G
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# The last number is the bold option, 0 or 1
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local -a themes
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themes=( "white/black/1" "green/black/0" "green/black/1" "white/blue/0" "white/blue/1"
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"magenta/black/0" "magenta/black/1" )
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```
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Read remaining configuration files to see what's in them. Nevertheless, configuration
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can be also set from `zshrc`. There are `5` standard `zshrc` configuration variables:
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```
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znt_history_active_text - underline or reverse - how should be active element highlighted
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znt_history_nlist_coloring_pattern - pattern that can be used to colorize elements
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znt_history_nlist_coloring_color - color with which to colorize
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znt_history_nlist_coloring_match_multiple - should multiple matches be colorized (0 or 1)
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znt_history_keywords (array) - search keywords activated with `Ctrl-X`, `F2` or `Ctrl-/`, e.g. ( "git" "vim" )
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```
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Above variables will work for `n-history` tool. For other tools, change `_history_` to
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e.g. `_cd_`, for the `n-cd` tool. The same works for all `8` tools.
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Common configuration of the tools uses variables with `_list_` in them:
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```
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znt_list_bold - should draw text in bold (0 or 1)
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znt_list_colorpair - main pair of colors to be used, e.g "green/black"
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znt_list_border - should draw borders around windows (0 or 1)
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znt_list_themes (array) - list of themes to try out with Ctrl-T, e.g. ( "white/black/1" "green/black/0" )
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znt_list_instant_select - should pressing enter in search mode leave tool (0 or 1)
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```
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If you used `ZNT` before `v2.1.12`, remove old configuration files `~/.config/znt/*.conf` so that `ZNT`
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can update them to the latest versions that support integration with `Zshrc`. If you used installer
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then run it again (after the remove of configuration files).
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## Programming
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The function `n-list` is used as follows:
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```zsh
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n-list {element1} [element2] ... [elementN]
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```
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This is all that is needed to be done to have the features like ANSI coloring,
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incremental multi-word search, unique mode, horizontal scroll, non-selectable
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elements (grepping is done outside `n-list`, see the tools for how it can be
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done). To set up non-selectable entries add their indices into array
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`NLIST_NONSELECTABLE_ELEMENTS`:
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```zsh
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typeset -a NLIST_NONSELECTABLE_ELEMENTS
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NLIST_NONSELECTABLE_ELEMENTS=( 1 )
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```
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Result is stored as `$reply[REPLY]` (`$` isn't needed before `REPLY` because
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of arithmetic context inside `[]`). The returned array might be different from
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input arguments as `n-list` can process them via incremental search or uniq
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mode. `$REPLY` is the index in that possibly processed array. If `$REPLY`
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equals `-1` it means that no selection have been made (user quit via `q`
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key).
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To set up entries that can be jumped to with `[`,`]` keys add their indices to
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`NLIST_HOP_INDEXES` array:
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```zsh
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typeset -a NLIST_HOP_INDEXES
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NLIST_HOP_INDEXES=( 1 10 )
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```
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`n-list` can automatically colorize entries according to a `Zsh` pattern.
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Following example will colorize all numbers with blue:
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```zsh
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local NLIST_COLORING_PATTERN="[0-9]##"
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local NLIST_COLORING_COLOR=$'\x1b[00;34m'
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local NLIST_COLORING_END_COLOR=$'\x1b[0m'
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local NLIST_COLORING_MATCH_MULTIPLE=1
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n-list "This is a number 123" "This line too has a number: 456"
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```
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Blue is the default color, it doesn't have to be set. See `zshexpn` man page
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for more information on `Zsh` patterns. Briefly, comparing to regular
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expressions, `(#s)` is `^`, `(#e)` is `$`, `#` is `*`, `##` is `+`. Alternative
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will work when in parenthesis, i.e. `(a|b)`. BTW by using this method you can
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colorize output of the tools, via their config files (check out e.g. n-cd.conf,
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it is using this).
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## Performance
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`ZNT` are fastest with `Zsh` before `5.0.6` and starting from `5.2`
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## A tip
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Zsh plugins may look scary, as they seem to have some "architecture". In fact, what a plugin really is, is that:
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1. It has its directory added to `fpath`
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2. It has any first `*.plugin.zsh` file sourced
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That's it. When one contributes to Oh-My-Zsh or creates a plugin for any plugin manager, they only need to account for this.
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The same with doing any non-typical Zsh Navigation Tools installation.
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## More
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- be aware of [this](https://github.com/zdharma-continuum/zsh-navigation-tools/blob/f49f910d239ae5bc6e1a5bb34930307b4f4e3ffe/zsh-navigation-tools.plugin.zsh#L35-L49)
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# Fixing tmux, screen and linux vt
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If `TERM=screen-256color` (often a case for `tmux` and `screen` sessions) then
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`ncv` terminfo capability will have `2`nd bit set. This in general means that
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underline won't work. To fix this by creating your own `ncv=0`-equipped
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terminfo file, run:
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```zsh
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{ infocmp -x screen-256color; printf '\t%s\n' 'ncv@,'; } > /tmp/t && tic -x /tmp/t
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```
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A file will be created in directory `~/.terminfo` and will be automatically
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used, `tmux` and `screen` will work. Similar is for Linux virtual terminal:
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```zsh
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{ infocmp -x linux; printf '\t%s\n' 'ncv@,'; } > /tmp/t && tic -x /tmp/t
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```
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It will not display underline properly, but will instead highlight by a color,
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which is quite nice. The same will not work for FreeBSD's vt, `ZNT` will detect
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if that vt is used and will revert to highlighting elements via `reverse` mode.
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[gitter-image]: https://badges.gitter.im/zdharma-continuum/community.svg
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[gitter-link]: https://gitter.im/zdharma-continuum/community
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