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Update highlighters documentation
Remove documentation from the README and point to the highlighters doc.
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Maxime Coste
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README.asciidoc
163
README.asciidoc
@ -1251,168 +1251,7 @@ and entering back insert mode (with which binding ?)
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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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:add-highlighter <highlighter_name> <highlighter_parameters...>
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---------------------------------------------------------------
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and
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------------------------------------
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:remove-highlighter <highlighter_id>
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------------------------------------
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`highlighter_id` is a name generated by the highlighter specified with `highlighter_name`,
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possibly dependent on the parameters. Use command completion on remove-highlighter to see the existing
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highlighters' id.
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General highlighters are:
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* `regex <ex> <capture_id>:<face>...`: highlight a regex, takes the regex as
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first parameter, followed by any number of face parameters.
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For example: `:add-highlighter 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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* `dynregex`: Similar to regex, but expand (like a command parameter would) the
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given expression before building a regex from the result.
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* `flag_lines <face> <option_name>`: add a column in front of the buffer,
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and display the flags specified in <option_name>, using <face>
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* `show_matching`: highlight matching char of the character under the selections'
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cursor using `MatchingChar` face.
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* `show_whitespaces \<-tab <separator> \<-tabpad <separator> \<-lf <separator> \<-spc <separator> \<-nbsp <separator>`: display symbols on top of whitespaces to make them more explicit using the Whitespace face.
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* `number_lines \<-relative> \<-hlcursor> \<-separator <separator text>`: show line numbers.
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The -relative switch will show line numbers relative to the main cursor line, the
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-hlcursor switch will highlight the cursor line with a separate face. With the
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-separator switch one can specify a string to separate the line numbers column with
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the rest of the buffer, default is `|`.
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* `wrap \<-word> \<-width <max_width>`: Soft wrap buffer content to the smallest of window width and
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max_width. Wrap at word boundaries if `-word` is specified.
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* `fill <face>`: fill using given face, mostly useful with <<regions-highlighters,Regions highlighters>>
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* `ranges <option_name>`: use the data in the range-specs option of the given name to highlight the buffer.
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The string part of the is interpretted as a face to apply to the range.
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* `replace-ranges <option_name>`: use the data in the range-specs option of the given name to highlight the buffer.
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The string part of the is interpretted as a display line to display in place of the range.
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* `column <number> <face>`: highlight column 'number' with the given face
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* `line <number> <face>`: highlight line 'number' with the given face
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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
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a group to the current window using
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----------------------------
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add-highlighter group <name>
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----------------------------
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and then the `-group` switch of `add-highlighter` provides a mean to add highlighters
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inside this group.
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------------------------------------------------
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add-highlighter -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.
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----------------------------------------------------------
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add-highlighter -group <name> group <subname>
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add-highlighter -group <name>/<subname> <type> <params>...
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----------------------------------------------------------
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[[regions-highlighters]]
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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
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to be highlighted differently.
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A region is defined by 4 parameters:
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------------------------------------
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<name> <opening> <closing> <recurse>
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------------------------------------
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`name` is user defined, `opening`, `closing` and `recurse` are regexes.
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* `opening` defines the region start text
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* `closing` defines the region end text
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* `recurse` defines the text that matches recursively an end token into the region.
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`recurse` is useful for regions that can be nested, for example the `%sh{ ... }`
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construct in kakoune accept nested `{ ... }` so `%sh{ ... { ... } ... }` is valid.
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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
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of regions.
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---------------------------------------------------------------------------------
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add-highlighter regions <name> <region_name1> <opening1> <closing1> <recurse1> \
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<region_name2> <opening2> <closing2> <recurse2>...
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---------------------------------------------------------------------------------
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The above command defines multiple regions in which other highlighters can be added as follows:
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-----------------------------------------------
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add-highlighter -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
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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
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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`
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highlighter as root:
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-----------------------------------------------------------------
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add-highlighter 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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add-highlighter -group <lang>/code ...
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add-highlighter -group <lang>/string ...
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add-highlighter -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
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share the highlighters between all the windows on the same filetypes.
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A shared highlighter can be defined with the `:add-highlighter` command
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----------------------------------------
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add-highlighter -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
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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
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with highlighters:
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--------------------------------------
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add-highlighter -group / group <name>
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add-highlighter -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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add-highlighter 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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See `:doc highlighters`
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Hooks
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~~~~~
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@ -11,15 +11,19 @@ Description
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Manipulation of the displayed text is done through highlighters, which can
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be added or removed with the following commands:
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---------------------------------------------------------------
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add-highlighter <highlighter_name> <highlighter_parameters> ...
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---------------------------------------------------------------
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----------------------------------------------------------------------
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add-highlighter <path> <highlighter_name> <highlighter_parameters> ...
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----------------------------------------------------------------------
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and
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-----------------------------------
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remove-highlighter <highlighter_id>
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-----------------------------------
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------------------------------------------
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remove-highlighter <path>/<highlighter_id>
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------------------------------------------
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*path* is the name of an highlighter group, it is expressed as a */*
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separated path starting with a scope. Scopes are *global*, *buffer*,
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*window* and *shared*
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*highlighter_id* is a name generated by the highlighter specified with
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*highlighter_name*, possibly dependent on the parameters. Use command
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@ -32,9 +36,9 @@ General highlighters
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highlight a regex, takes the regex as first parameter, followed by
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any number of face parameters. For example:
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----------------------------------------------------------------
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add-highlighter regex //\h*(TODO:)[^\n]* 0:cyan 1:yellow,red
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----------------------------------------------------------------
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-------------------------------------------------------------------
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add-highlighter window regex //\h*(TODO:)[^\n]* 0:cyan 1:yellow,red
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-------------------------------------------------------------------
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will highlight C++ style comments in cyan, with an eventual 'TODO:'
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in yellow on red background
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@ -116,34 +120,25 @@ Highlighting Groups
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-------------------
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The *group* highlighter is a container for other highlighters. You can add a
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group to the current window using
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a subgroup to an existing group, or scope using:
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----------------------------
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add-highlighter group <name>
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----------------------------
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-----------------------------------
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add-highlighter <path> group <name>
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-----------------------------------
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The *-group* switch of the *add-highlighter* command provides a mean to add highlighters
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inside this group:
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That group is then accessible using the *<path>/<name>* path
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------------------------------------------------
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add-highlighter -group <name> <type> <params>...
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add-highlighter <path>/<name> <type> <params>...
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------------------------------------------------
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Groups can contain other groups, the *-group* switch can be used to define
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a path as follows:
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----------------------------------------------------------
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add-highlighter -group <name> group <subname>
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add-highlighter -group <name>/<subname> <type> <params>...
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----------------------------------------------------------
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In order to specify which kinds of highlighters can be added to a given group, the *-passes*
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flag set can be passed along with the group name. Possible values for this option can be one
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or several (separated with a pipe sign) of *colorize*, *move* or *wrap* (default: *colorize*):
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-------------------------------------------------------
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add-highlighter group -passes colorize|move|wrap <name>
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-------------------------------------------------------
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--------------------------------------------------------------
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add-highlighter window group -passes colorize|move|wrap <name>
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--------------------------------------------------------------
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Regions highlighters
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--------------------
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@ -185,15 +180,16 @@ of regions.
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The following command:
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------------------------------------------------------------------------------
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add-highlighter regions <name> <region_name1> <opening1> <closing1> <recurse1>
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<region_name2> <opening2> <closing2> <recurse2>...
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------------------------------------------------------------------------------
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------------------------------------------------------
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add-highlighter <path> regions <name> \
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<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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add-highlighter -group <name>/<region_name> ...
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add-highlighter <path>/<name>/<region_name> ...
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-----------------------------------------------
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Regions are matched using the left-most rule: the left-most region opening
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@ -213,13 +209,13 @@ Most programming languages can then be properly highlighted using a region
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highlighter as root:
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-----------------------------------------------------------------
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add-highlighter regions -default code <lang> \
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add-highlighter <path> 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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add-highlighter -group <lang>/code ...
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add-highlighter -group <lang>/string ...
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add-highlighter -group <lang>/comment ...
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add-highlighter <path>/<lang>/code ...
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add-highlighter <path>/<lang>/string ...
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add-highlighter <path>/<lang>/comment ...
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-----------------------------------------------------------------
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Shared Highlighters
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@ -228,22 +224,19 @@ Shared Highlighters
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Highlighters are often defined for a specific filetype, and it makes then
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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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Highlighters can be put in the shared scope in order to make them reusable.
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----------------------------------------
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add-highlighter -group /<group_name> ...
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----------------------------------------
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When the group switch values starts with a '/', it references a group in
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the shared highlighters, rather than the window highlighters.
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---------------------------------------
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add-highlighter shared/<group_name> ...
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---------------------------------------
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The common case would be to create a named shared group, and then fill it
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with highlighters:
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--------------------------------------
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add-highlighter -group / group <name>
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add-highlighter -group /name regex ...
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--------------------------------------
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---------------------------------------
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add-highlighter shared/ group <name>
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add-highlighter shared/<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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@ -251,4 +244,4 @@ It can then be referenced in a window using the ref highlighter.
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add-highlighter 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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The ref can reference any named highlighter in the shared scope.
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