174 lines
5.6 KiB
Plaintext
174 lines
5.6 KiB
Plaintext
KAKOUNE(1)
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==========
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NAME
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----
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highlighters - a
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Description
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-----------
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Manipulation of the displayed text is done through highlighters, which can be added or removed with the following
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commands:
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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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*highlighter_id* is a name generated by the highlighter specified with *highlighter_name*, possibly dependent on
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the parameters. Use command completion in a prompt on the *rmhl* command to see the existing highlighters ids.
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General highlighters
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--------------------
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*regex* <ex> <capture_id>:<face> ...::
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highlight a regex, takes the regex as first parameter, followed by any number of face parameters. For example:
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addhl regex //(\hTODO:)?[^\n] 0:cyan 1:yellow,red
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will highlight C++ style comments in cyan, with an eventual 'TODO:' in yellow on red background
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*dynregex*::
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Similar to regex, but expand (like a command paramater would) the given expression before building a regex from the result
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*flag_lines* <flag> <option_name>::
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add a column in front of text, and display the given flag in it for everly line contained in the int-list option named <option_name>
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*show_matching*::
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highlight matching char of the character under the selections cursor using MatchingChar face
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*number_lines* [options]::
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show line numbers, with the following *options*:
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*-relative*:::
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show line numbers relative to the main cursor line
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*-hlcursor*:::
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highlight the cursor line with a separate face
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*-separator* <separator text>:::
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specify a string to separate the line numbers column with the rest of the buffer (default is '|')
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*fill* <face>::
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fill using the given *face*, mostly useful with regions highlighters
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Highlighting Groups
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-------------------
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The group highlighter is a container for other highlighters. You can add a group to the current window using
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--------------------
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addhl group <name>
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--------------------
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The *-group* switch of the *addhl* command provides a mean to add highlighters inside this group:
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----------------------------------------
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addhl -group <name> <type> <params>...
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----------------------------------------
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Groups can contain other groups, the *-group* switch can be used to define a path as follows:
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--------------------------------------------------
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addhl -group <name> group <subname>
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addhl -group <name>/<subname> <type> <params>...
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--------------------------------------------------
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Regions highlighters
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--------------------
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A special highlighter provides a way to segment the buffer into regions, which are to be highlighted differently.
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*name*::
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user defined, used to identify the region
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*opening*::
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regex that defines the region start text
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*closing*::
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regex that defines the region end text
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*recurse*::
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regex that defines the text that matches recursively an end token into the region
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The *recurse* option is useful for regions that can be nested, for example the following contruct:
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----------
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%sh{ ... }
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----------
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accepts nested braces scopes ('{ ... }') so the following string is valid:
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----------------------
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%sh{ ... { ... } ... }
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----------------------
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This region can be defined with:
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------------------------
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shell_expand %sh\{ \} \{
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------------------------
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Regions are used in the regions highlighter which can take any number of regions.
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The following command:
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-----------------------------------------------------------------------
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addhl regions <name> <region_name1> <opening1> <closing1> <recurse1>
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<region_name2> <opening2> <closing2> <recurse2>...
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-----------------------------------------------------------------------
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defines multiple regions in which other highlighters can be added as follows:
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---------------------------------------
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addhl -group <name>/<region_name> ...
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---------------------------------------
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Regions are matched using the left-most rule: the left-most region opening starts a new region. When a region closes, the closest next opening start another region.
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That matches the rule governing most programming language parsing.
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Regions also supports a *-default <default_region>* switch to define the default region, when no other region matches the current buffer range.
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Most programming languages can then be properly highlighted using a regions highlighter as root:
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-----------------------------------------------------------------
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addhl regions -default code <lang> \
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string <str_opening> <str_closing> <str_recurse> \
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comment <comment_opening> <comment_closing> <comment_recurse>
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addhl -group <lang>/code ...
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addhl -group <lang>/string ...
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addhl -group <lang>/comment ...
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-----------------------------------------------------------------
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Shared Highlighters
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-------------------
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Highlighters are often defined for a specific filetype, and it makes then sense to share the highlighters between all the windows on the same filetypes.
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A shared highlighter can be defined with the following command:
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--------------------------------
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addhl -group /<group_name> ...
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--------------------------------
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When the group switch values starts with a '/', it references a group in the shared highlighters, rather than the window highlighters.
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The common case would be to create a named shared group, and then fill it with highlighters:
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------------------------------
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addhl -group / group <name>
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addhl -group /name regex ...
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------------------------------
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It can then be referenced in a window using the ref highlighter.
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------------------
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addhl ref <name>
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------------------
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The ref can reference any named highlighter in the shared namespace.
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