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632 lines
24 KiB
Plaintext
632 lines
24 KiB
Plaintext
Kakoune
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=======
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Introduction:
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-------------
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Kakoune is a code editor heavily inspired by vim, as such most of it's
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commands are similar to vi's ones.
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Kakoune can operate in two modes, normal and insertion. In insertion mode,
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keys are directly inserted into the current buffer. In normal mode, keys
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are used to manipulate the current selection and to enter insertion mode.
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There is no concept of cursor in kakoune, only selections, a single character
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selection can be seen as a cursor but there is no difference internally.
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Building
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--------
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Kakoune dependencies are:
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* GCC >= 4.7
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* boost
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* ncurses
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To build, just type *make* in the src directory
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To setup a basic configuration on your account, type *make userconfig* in the
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src directory, this will setup an initial $XDG_CONFIG_HOME/kak directory. See
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the _Kakrc_ section for more information.
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Running
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-------
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Just running *kak* launch a new kak session with a client on local terminal.
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*kak* accepts some switches:
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* +-c <session>+: connect to given session (which is the pid of the
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initial kak process), sessions are unix sockets +/tmp/kak-<session>+
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* +-e <commands>+: execute commands on startup
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* +-n+: ignore kakrc file
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Basic Movement
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--------------
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* _space_: select the character under selection end
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* _alt-space_: flip the selections
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* _h_: select the character on the right of selection end
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* _j_: select the character below the selection end
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* _k_: select the character above the selection end
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* _l_: select the character on the left of selection end
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* _w_: select the word and following whitespaces on the right of selection end
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* _b_: select preceding whitespaces and the word on the left of selection end
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* _e_: select preceding whitespaces and the word on the right of selection end
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* _alt-[wbe]_: same as [wbe] but select WORD instead of word
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* _x_: select line on which selection end lies (or next line when end lies on
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an end-of-line)
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* _alt-x_: expand selections to contain full lines (including end-of-lines)
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* _alt-X_: trim selections to only contain full lines (not including last
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end-of-line)
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* _%_: select whole buffer
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* _alt-H_: select to line begin
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* _alt-L_: select to line end
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* _/_: search (select next match)
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* _?_: search (extend to next match)
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* _n_: select next match
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* _N_: add a new selection with next match
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* _alt-n_: replace main selection with next match (preserving the others)
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* _alt-c_: center main selection in current window
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* _pageup_: scroll up
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* _pagedown_: scroll down
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Appending
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---------
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for most selection commands, using shift permits to extend current selection
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instead of replacing it. for example, _wWW_ selects 3 consecutive words
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Using Counts
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------------
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Most selection commands also support counts, which are entered before the
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command itself.
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for example, _3W_ selects 3 consecutive words and _3w_ select the third word on
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the right of selection end.
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* _space_: when used with count, keep only the counth selection
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* _alt-space_: when used with count, remove the counth selection
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Changes
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-------
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* _i_: insert before current selection
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* _a_: insert after current selection
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* _d_: yank and delete current selection
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* _c_: yank and delete current selection and insert
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* _I_: insert at current selection begin line start
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* _A_: insert at current selection end line end
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* _o_: insert in a new line below current selection end
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* _O_: insert in a new line above current selection begin
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* _p_: paste after current selection end
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* _P_: paste before current selection begin
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* _alt-p_: replace current selection with yanked text
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* _alt-j_: join selected lines
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* _alt-J_: join selected lines and select spaces inserted
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in place of line breaks
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* _>_: indent selected lines
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* _<_: deindent selected lines
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* _|_: pipe each selections through the given external filter program
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and replace with it's output.
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* _u_: undo last change
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* _U_: redo last change
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* _r_: replace each character with the next entered one
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* _&_: align selection, align the last character of selections by
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inserting spaces before
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* _`_: to lower case
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* _~_: to upper case
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* _alt-`_: swap case
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Goto Commands
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-------------
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Commands begining with g are used to goto certain position and or buffer:
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* _gh_: select to line begin
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* _gl_: select to line end
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* _gg_, _gk_: go to the first line
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* _gj_: go to the last line
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* _gt_, _gk_: go to the first displayed line
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* _gc_, _gk_: go to the middle displayed line
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* _gb_: go to the last displayed line
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* _ga_: go to the previous (alternate) buffer
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* _gf_: open the file whose name is selected
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View commands
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-------------
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Some commands, all begining with v permit to manipulate the current
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view.
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* _vv_ or _vc_: center the main selection in the window
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* _vt_: scroll to put the main selection on the top line of the window
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* _vb_: scroll to put the main selection on the bottom line of the window
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* _vj_: scroll the window count line downward
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* _vk_: scroll the window count line upward
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* _vh_: scroll the window count columns left
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* _vl_: scroll the window count columns right
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Multi Selection
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---------------
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Kak was designed from the start to handle multiple selections.
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One way to get a multiselection is via the _s_ key.
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For example, to change all occurences of word 'roger' to word 'marcel'
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in a paragraph, here is what can be done:
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select the paragraph with enough _x_. press _s_ and enter roger then enter.
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now paragraph selection was replaced with multiselection of each roger in
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the paragraph. press _c_ and marcel<esc> to replace rogers with marcels.
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A multiselection can also be obtained with _S_, which splits the current
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selection according to the regex entered. To split a comma separated list,
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use _S_ then ', *'
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_s_ and _S_ share the search pattern with _/_, and hence entering an empty
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pattern uses the last one.
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As a convenience, _alt-s_ allows you to split the current selections on
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line boundaries.
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To clear multiple selections, use _space_. To keep only the nth selection
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use _n_ followed by _space_, to remove only the nth selection, use _n_
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followed by _alt-space_.
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_alt-k_ allows you to enter a regex and keep only the selections that
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contains a match for this regex. using _alt-K_ you can keep the selections
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not containing a match.
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Object Selection
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----------------
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Some keys allow you to select a text object:
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* _alt-a_: selects the whole object
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* _alt-i_: selects the inner object, that is the object excluding it's surrounder.
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for example, for a quoted string, this will not select the quote, and
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for a word this will not select trailing spaces.
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* _[_: selects to object start
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* _]_: selects to object end
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After this key, you need to enter a second key in order to specify which
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object you want.
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* _b_, _(_ or _)_: select the enclosing parenthesis
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* _B_, _{_ or _}_: select the enclosing {} block
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* _r_, _[_ or _]_: select the enclosing [] block
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* _<_ or _>_: select the enclosing <> block
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* _"_: select the enclosing double quoted string
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* _'_: select the enclosing single quoted string
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* _w_: select the whole word
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* _W_: select the whole WORD
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* _s_: select the sentence
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* _p_: select the paragraph
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* _i_: select the current indentation block
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Registers
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---------
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registers are named list of text. They are used for various purpose, like
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storing the last yanked test, or the captures groups associated with the
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selections.
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While in insert mode, ctrl-r followed by a register name (one character)
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inserts it.
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For example, ctrl-r followed by " will insert the currently yanked text.
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ctrl-r followed by 2 will insert the second capture group from the last regex
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selection.
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Registers are lists, instead of simply text in order to interact well with
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multiselection. Each selection have it's own captures, or yank buffer.
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Search selection
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----------------
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Using the _*_ key, you can set the search pattern to the current selection.
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This tries to be intelligent. It will for example detect if current selection
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begins and/or end at word boundaries, and set the search pattern accordingly.
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with _alt-*_ you can set the search pattern to the current seletion without
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kakoune trying to be smart.
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Basic Commands
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--------------
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Commands are entered using +:+.
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* +e[dit] <filename> [<line> [<column>]]+: open buffer on file, go to given
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line and column. If file is already opened, just switch to this file.
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use edit! to force reloading.
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* +w[rite] [<filename>]+: write buffer to <filename> or use it's name if
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filename is not given.
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* +q[uit]+: exit Kakoune, use quit! to force quitting even if there is some
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unsaved buffers remaining.
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* +wq+: write current buffer and quit
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* +b[uffer] <name>+: switch to buffer <name>
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* +d[el]b[uf] [<name>]+: delete the buffer <name>, use d[el]b[uf]! to force
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deleting a modified buffer.
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* +source <filename>+: execute commands in <filename>
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* +runtime <filename>+: execute commands in <filename>, <filename>
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is relative to kak executable path.
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* +nameclient <name>+: set current client name
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* +namebuf <name>+: set current buffer name
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* +exec [-client <name>] <keys>+: execute <keys> as if pressed in normal mode.
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if client if specified, exec keys in the named client context.
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* +eval [-client <name>] <command>+: execute <command> as if entered in command line
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if client if specified, exec command in the named client context.
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* +echo <text>+: show <text> in status line
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* +decl <type> <name> [<value>]+: declare an option, type can be int, str, int-list
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and str-list.
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* +set{b,w,g} <option> <value>+: set <option> to <value> in *b*uffer, *w*indow
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or *g*lobal scope.
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* +name <name>+: sets current client name to name
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* +nop+: does nothing, but as with every other commands, arguments may be
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evaluated. So nop can be used for example to execute a shell command
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while being sure that it's output will not be interpreted by kak.
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+:%sh{ echo echo tchou }+ will echo tchou in kakoune, whereas
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+:nop %sh{ echo echo tchou }+ will not, but both will execute the
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shell command.
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String syntax
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-------------
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When entering a command, parameters are separated by whitespace (shell like),
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if you want to give parameters with spaces, you should quote them.
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Kakoune support three string syntax:
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* +"strings" and \'strings\'+: classic strings, use \' or \" to escape the
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separator.
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* +%\{strings\}+: these strings are very useful when entering commands
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- the '{' and '}' delimiter are configurable: you can use any non
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alphanumeric character. like %[string], %<string>, %(string), %~string~
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or %!string!...
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- if the character following the % is one of {[(<, then the closing one is
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the matching }])> and the delimiters are not escapable but are nestable.
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for example +%{ roger {}; }+ is a valid string, +%{ marcel \}+ as well.
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Highlighters
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------------
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Manipulation of the displayed text is done through highlighters, which can be added
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or removed with the command
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-----------------------------------------------------
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:addhl <highlighter_name> <highlighter_parameters...>
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-----------------------------------------------------
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and
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----------------------
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:rmhl <highlighter_id>
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----------------------
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existing highlighters are:
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* +number_lines+: show line numbers
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* +group <group_name>+: highlighter group, containing other highlighters.
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useful when multiple highlighters work together and need to be
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removed as one. Adding and removing from a group can be done using
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`:addhl -group <group> <highlighter_name> <highlighter_parameters...>`
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`:rmhl -group <group> <highlighter_name>`
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* +regex <ex> <color>...+: highlight a regex, takes the regex as first parameter,
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followed by any number of color parameters. color format is:
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<capture_id>:<fg_color>[,<bg_color>]
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For example: `:addhl regex //(\h+TODO:)?[^\n]+ 0:cyan 1:yellow,red`
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will highlight C++ style comments in cyan, with an eventual 'TODO:' in
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yellow on red background.
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* +search <color>+: highlight every matches to the current search pattern. takes
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one parameter for the color to apply to highlighted elements.
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* +flag_lines <flag> <option_name>+: add a column in front of text, and display the
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given flag in it for everly lines contained in the int-list option named
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<option_name>.
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Filters
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-------
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Filters can be installed to interact with buffer modifications. They can be
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added or removed with
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-----------------------------------------------
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:addfilter <filter_name> <filter_parameters...>
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-----------------------------------------------
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and
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---------------------
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:rmfilter <filter_id>
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---------------------
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exisiting filters are:
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* +preserve_indent+: insert previous line indent when inserting a newline
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* +cleanup_whitespaces+: remove trailing whitespaces on the previous line
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when inserting an end-of-line.
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* +expand_tabulations+: insert spaces instead of tab characters
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* +regex <line_regex> <insert_regex> <replacement>+: when the current line regex
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and inserted text regex matches, replace insereted text with the
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replacement text. Capture groups are available through $[0-9] escape
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sequence, and cursor position can be specified with $c.
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* +group+: same as highlighters group
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Hooks
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-----
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commands can be registred to be executed when certain events arise.
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to register a hook, use the hook command.
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------------------------------------------------------
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:hook <scope> <hook_name> <filtering_regex> <commands>
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------------------------------------------------------
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<scope> can be either global, buffer or window, the scope are hierarchical,
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meaning that a Window calling a hook will execute it's own, the buffer ones
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and the global ones.
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<command> is a string containing the commands to execute when the hook is
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called.
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for example, to automatically use line numbering with .cc files,
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use the following command:
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-----------------------------------------------------
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:hook global WinCreate .*\.cc %{ addhl number_lines }
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-----------------------------------------------------
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existing hooks are:
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* +NormalIdle+: A certain duration has passed since last key was pressed in
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normal mode.
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* +NormalBegin+: Entering normal mode
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* +NormalEnd+: Leaving normal mode
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* +NormalKey+: A key is received in normal mode, the key is used for filtering
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* +InsertIdle+: A certain duration has passed since last key was pressed in
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insert mode.
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* +InsertBegin+: Entering insert mode
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* +InsertEnd+: Leaving insert mode
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* +InsertKey+: A key is received in insert mode, the key is used for filtering
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* +InsertMove+: The cursor moved (without inserting) in insert mode, the key
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that triggered the move is used for filtering
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* +WinCreate+: A window was created, the filtering text is the buffer name
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* +WinDisplay+: A window was bound a client, the filtering text is the buffer
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name
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* +WinSetOption+: An option was set in a window context, the filtering text
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is '<option_name>=<new_value>'
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* +BufNew+: A buffer for a new file has been created, filename is used for
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filtering
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* +BufOpen+: A buffer for an existing file has been created, filename is
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used for filtering
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* +BufCreate+: A buffer has been created, filename is used for filtering
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* +RuntimeError+: an error was encountered while executing an user command
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the error message is used for filtering
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* +KakBegin+: Kakoune started, this is called just after reading the user
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configuration files
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* +KakEnd+: Kakoune is quitting.
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when not specified, the filtering text is an empty string.
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Color Aliases
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-------------
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Colorspec takes the form <fg_color>[,<bg_color>], they can be named using the
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following command.
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--------------------------
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:colalias <name> <colspec>
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--------------------------
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note that colspec can itself be a color alias.
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Using color alias instead of colorspec permits to change the effective colors
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afterward.
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there are some builtins color aliases:
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* +PrimarySelection+: main selection color for every selected character except
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the last one
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* +SecondarySelection+: secondary selection color for every selected character
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except the last one
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* +PrimaryCursor+: last character of the primary selection
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* +SecondaryCursor+: last character of the secondary selection
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* +LineNumbers+: colors used by the number_lines highlighter
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* +MenuForeground+: colors for the selected element in menus
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* +MenuBackground+: colors for the not selected elements in menus
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* +Information+: colors the informations windows and information messages
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* +Error+: colors of error messages
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* +StatusLine+: colors used for the status line
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* +StatusCursor+: colors used for the status line cursor
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* +Prompt+: colors used prompt displayed on the status line
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Shell expansion
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---------------
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A special string syntax is supported which replace it's content with the
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output of the shell commands in it, it is similar to the shell $(...)
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syntax and is evaluated only when needed.
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for example: %sh{ ls } is replaced with the output of the ls command.
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Some of kakoune state is available through environment variables:
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* +kak_selection+: content of the main selection
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* +kak_selections+: content of the selection separated by commas
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* +kak_bufname+: name of the current buffer
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* +kak_timestamp+: timestamp of the current buffer, the timestamp is an
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integer value which is incremented each time the buffer is modified.
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* +kak_runtime+: directory containing the kak binary
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* +kak_opt_<name>+: value of option <name>
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* +kak_reg_<r>+: value of register <r>
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* +kak_socket+: filename of session socket (/tmp/kak-<session>)
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* +kak_client+: name of current client
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* +kak_cursor_line+: line of the end of the main selection
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* +kak_cursor_cursor+: column of the end of the main selection
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* +kak_hook_param+: filtering text passed to the currently executing hook
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for example you can print informations on the current file in the status
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line using:
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-------------------------------
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:echo %sh{ ls -l $kak_bufname }
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-------------------------------
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Register and Option expansion
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-----------------------------
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Similar to shell expansion, register contents and options values can be
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accessed through %reg{<register>} and %opt{<option>} syntax.
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for example you can display last search pattern with
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-------------
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:echo %reg{/}
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-------------
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Defining Commands
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-----------------
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new commands can be defined using the +def+ command.
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------------------------------
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:def <command_name> <commands>
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------------------------------
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<commands> is a string containing the commands to execute
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def can also takes some flags:
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* +-env-params+: pass parameters given to commands in the environement as
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kak_paramN with N the parameter number
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* +-shell-params+: pass parameters given to commands as positional parameters
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to any shell expansions used in the command.
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* +-file-completion+: try file completion on any parameter passed
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to this command
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* +-shell-completion+: following string is a shell command which takes
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parameters as positional params and output one
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completion candidate per line.
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* +-allow-override+: allow the new command to replace an exisiting one
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with the same name.
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Using shell expansion permits to define complex commands or to access
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kakoune state:
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------------------------------------------------------
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:def print_selection %{ echo %sh{ ${kak_selection} } }
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------------------------------------------------------
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Some helper commands can be used to define composite commands:
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* +menu <label1> <commands1> <label2> <commands2>...+: display a menu using
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labels, the selected label's commands are executed.
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+menu+ can take a -auto-single argument, to automatically run commands
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when only one choice is provided. and a -select-cmds argument, in which
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case menu takes three argument per item, the last one being a command
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to execute when the item is selected (but not validated).
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* +info <text>+: display text in an information box, at can take a -anchor
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option, which accepts +left+, +right+ and +cursor+ as value, in order to
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specify where the info box should be anchored relative to the main selection.
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* +try <commands> catch <on_error_commands>+: prevent an error in <commands>
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from aborting the whole commands execution, execute <on_error_commands>
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instead.
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* +reg <name> <content>+: set register <name> to <content>
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Note that these commands are available in interactive command mode, but are
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not that useful in this context.
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FIFO Buffer
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-----------
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the +edit+ command can take a -fifo parameter:
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-----------------------------------
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:edit -fifo <filename> <buffername>
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-----------------------------------
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in this case, a buffer named +<buffername>+ is created which reads its content
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from fifo +<filename>+. When the fifo is written to, the buffer is automatically
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updated.
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This is very useful for running some commands asynchronously while displaying
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their result in a buffer. See rc/make.kak and rc/grep.kak for examples.
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When the buffer is deleted, the fifo will be closed, so any program writing
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to it will receive SIGPIPE. This is usefull as it permits to stop the writing
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|
program when the buffer is deleted.
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Menus
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-----
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When a menu is displayed, you can use *j*, *control-n* or *tab* to select the next
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entry, and *k*, *control-p* or *shift-tab* to select the previous one.
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Using the */* key, you can enter some regex in order to restrict available choices
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to the matching ones.
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|
Kakrc
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|
-----
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|
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The kakrc file next to the kak binary (in the src directory for the moment)
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|
is a list of kak commands to be executed at startup.
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The current behaviour is to execute local user commands in the file
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$HOME/.config/kak/kakrc and in all files in $HOME/.config/kak/autoload
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directory
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Place links to the files in src/rc/ in your autoload directory in order to
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execute them on startup, or use the runtime command (which sources relative
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to the kak binary) to load them on demand.
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Existing commands files are:
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* *rc/kakrc.kak*: provides kak commands files autodetection and highlighting
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* *rc/cpp.kak*: provides c/c++ files autodetection and highlighting and the +alt+
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|
command for switching from c/cpp file to h/hpp one.
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* *rc/asciidoc.kak*: provides asciidoc files autodetection and highlighting
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* *rc/diff.kak*: provides patches/diff files autodetection and highlighting
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* *rc/git.kak*: provides various git format highlighting (commit message editing,
|
|
interactive rebase)
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|
* *rc/git-tools.kak*: provides some git integration, like +git-blame+, +git-show+
|
|
or +git-diff-show+
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|
* *rc/make.kak*: provides the +make+ and +errjump+ commands along with highlighting
|
|
for compiler output.
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|
* *rc/man.kak*: provides the +man+ command
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|
* *rc/grep.kak*: provides the +grep+ and +gjump+ commands along with highlighting
|
|
for grep output.
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|
* *rc/global.kak*: provides the +tag+ command to jump on a tag definition using
|
|
gnu global tagging system.
|
|
* *rc/ctags.kak*: provides the +tag+ command to jump on a tag definition using
|
|
exuberant ctags files, this script requires the *readtags* binary, available
|
|
in the exuberant ctags package but not installed by default.
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|
* *rc/client.kak*: provides the +new+ command to launch a new client on the current
|
|
session, if tmux is detected, launch the client in a new tmux split, else
|
|
launch in a new terminal emulator.
|
|
* *rc/clang.kak*: provides the +clang-enable-autocomplete+ command for C/C++
|
|
insert mode completion support. This needs uses clang++ compiler.
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|
|
|
Certain command files defines options, such as +grepcmd+ (for :grep) +makecmd+
|
|
(for :make) or +termcmd+ (for :new).
|
|
|
|
Some options are shared with commands. grep and make honor the +toolsclient+ option,
|
|
if specified, to open their buffer in it rather than the current client. man honor
|
|
the +docsclient+ option for the same purpose.
|