daa63ba879
In some cases, it may be difficult to easily spot the area out of the buffer (bad color scheme, small font, superimposed windows). This patch adds two ncurses ui_options to bypass this problem: - `ncurses_padding_char`, to configure the padding character, - `ncurses_padding_fill`, to indicate whether to fill the padding line (or to display a single character). The default config is the legacy one (a single "~").
390 lines
13 KiB
Plaintext
390 lines
13 KiB
Plaintext
= Options
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== Description
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Kakoune can store named and typed values that can be used both to
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customize the core editor behaviour, and to store data used by extension
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scripts.
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[[set-option]]
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Options can be modified using the `set-option` command:
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--------------------------------------------
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set-option [-add|-remove] <scope> <name> <values>...
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--------------------------------------------
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<scope> can be *global*, *buffer*, *window* or *current* (See
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<<scopes#,`:doc scopes`>>). *current* relates to the narrowest scope in
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which the option is already set.
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When the option is a list or a map, multiple <values> can be given as
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separate arguments, or can be omitted altogether in order to empty the
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option.
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If `-add` or `-remove` is specified, the new value is respectively *added*
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to or *removed* from the current one instead of replacing it (the exact
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outcome depends on the type, see below).
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[[unset-option]]
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Options values can be unset in a specific scope with the `unset-option`
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command:
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---------------------------
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unset-option <scope> <name>
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---------------------------
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Unsetting an option will make it fallback to the value of its parent scope,
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hence options cannot be unset from the *global* scope.
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[[declare-option]]
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New options can be declared using the `declare-option` command:
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---------------------------------------------------
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declare-option [-hidden] <type> <name> [<value>...]
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---------------------------------------------------
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If `-hidden` is specified, the option will not be displayed in completion
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suggestions.
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[[update-option]]
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Certain option type can be *updated*, usually to match potential changes
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in the buffer they relate to. This can be triggered by the `update-option`
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command:
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----------------------------
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update-option <scope> <name>
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----------------------------
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== Types
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All options have a type, which defines how they are translated to/from
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text and their set of valid values.
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Some types are usable for user defined options while some other types
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are exclusively available to built-in options.
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*int*::
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an integer number.
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`set -add` performs a math addition. +
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`set -remove` performs a math substraction. +
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*bool*::
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a boolean value, yes/true or no/false
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*str*::
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a string, some freeform text
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*regex*::
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as a string but the set commands will complain if the entered text
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is not a valid regex
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*coord*::
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a line, column pair (separated by a comma)
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Cannot be used with `declare-option`
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*<type>-list*::
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a list, elements are specified as separate arguments to the command.
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`set -add` appends the new element to the list. +
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`set -remove` removes each given element from the list. +
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Only `int-list` and `str-list` options can be created with
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`declare-option`.
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*range-specs*::
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a timestamp (like `%val{timestamp}`,
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see <<expansions#value-expansions,`:doc expansions value-expansions`>>)
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followed by a list of range descriptors.
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Each range descriptor must use the syntax `a.b,c.d|string` or
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`a.b+length|string`, with:
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* _a_ is the line containing the first character
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* _b_ is the number of bytes from the start of the line to the
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first byte of the first character
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* _c_ is the line containing the last character
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* _d_ is the number of bytes from the start of the line to the
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first byte of the last character
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* _length_ is the length of the range in bytes, if 0 the range
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is empty, but still valid.
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* _string_ is an arbitrary string which is associated with
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the range.
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All numeric fields are 1-based.
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When the command `update-option` is used on an option of this type,
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its ranges get updated according to all the buffer modifications
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that happened since its timestamp.
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`set -add` appends the new pairs to the list. +
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`set -remove` removes the given pairs from the list. +
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See <<highlighters#specs-highlighters,`:doc highlighters specs-highlighters`>>)
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*line-specs*::
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a list of a line number and a corresponding flag (`<line>|<flag
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text>`), except for the first element which is just the timestamp
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of the buffer. When `update-option` is used on an option of this
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type, its lines get updated according to all the buffer modifications
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that happened since its timestamp.
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See <<highlighters#specs-highlighters,`:doc highlighters specs-highlighters`>>)
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`set -add` appends the new specs to the list. +
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`set -remove` removes the given specs from the list. +
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*completions*::
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a list of `<text>|<select cmd>|<menu text>` candidates,
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except for the first element which follows the
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`<line>.<column>[+<length>]@<timestamp>` format to define where the
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completion apply in the buffer.
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Select commands are arbitrary Kakoune commands that will be executed
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each time the element is selected in the menu. The common use case is
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to display element specific documentation.
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Markup can be used in the menu text.
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(see <<faces#markup-strings,`:doc faces markup-strings`>>)
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`set -add` adds given completions to the list. +
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`set -remove` removes given completions from the list. +
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*enum(value1|value2|...)*::
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an enum, taking one of the given values
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Cannot be used with `declare-option`
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*flags(value1|value2|...)*::
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a set of flags, taking a combination of the given values joined by a
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'|' character.
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`set -add` adds the given flags to the combination. +
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`set -remove` removes the given flags to the combination. +
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Cannot be used with `declare-option`
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*<type>-to-<type>-map*::
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a list of `key=value` pairs.
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`set -add` adds the given pair to the hashmap or replace an already
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existing key. +
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`set -remove` removes the given pair from the hashmap, if only the
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key is provided it removes that entry regardless of the associated
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value. +
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Only `str-to-str-map` options can be created with `declare-option`.
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== Builtin options
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*tabstop* `int`::
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_default_ 8 +
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width of a tab character
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*indentwidth* `int`::
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_default_ 4 +
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width (in spaces) used for indentation, 0 means a tab character
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*scrolloff* `coord`::
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_default_ 0,0 +
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number of lines, columns to keep visible around the cursor when
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scrolling
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*eolformat* `enum(lf|crlf)`::
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_default_ lf +
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the format of end of lines when writing a buffer, this is autodetected
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on load; values of this option assigned to the `window` scope are
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ignored
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*BOM* `enum(none|utf8)`::
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_default_ none +
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define if the file should be written with a unicode byte order mark;
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values of this option assigned to the `window` scope are ignored
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*readonly* `bool`::
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_default_ false +
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prevent modifications from being saved to disk, all buffers if set
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to `true` in the `global` scope, or current buffer if set in the
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`buffer` scope; values of this option assigned to the `window`
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scope are ignored
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*incsearch* `bool`::
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_default_ true +
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execute search as it is typed
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*aligntab* `bool`::
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_default_ false +
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use tabs for alignment command
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*autoinfo* `flags(command|onkey|normal)`::
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_default_ command|onkey +
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display automatic information box in the enabled contexts
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*autocomplete* `flags(insert|prompt)`::
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_default_ insert|prompt +
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automatically display possible completions in the enabled modes.
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*ignored_files* `regex`::
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filenames matching this regex won't be considered as candidates
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on filename completion (except if the text being completed already
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matches it)
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*disabled_hooks* `regex`::
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hooks whose group matches this regex won't be executed. For example
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indentation hooks can be disabled with `.*-indent`.
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(See <<hooks#disabling-hooks,`:doc hooks`>>)
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*filetype* `str`::
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arbitrary string defining the type of the file. Filetype dependent
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actions should hook on this option changing for activation/deactivation
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*path* `str-list`::
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_default_ ./ %/ /usr/include +
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directories to search for *gf* command and filenames completion
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`%/` represents the current buffer directory
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*completers* `completer-list`::
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_default_ filename word=all +
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completion engines to use for insert mode completion (they are tried
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in order until one generates candidates). Existing completers are:
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*word=all*, *word=buffer*:::
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which complete using words in all buffers (*word=all*)
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or only the current one (*word=buffer*)
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*filename*:::
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which tries to detect when a filename is being entered and
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provides completion based on local filesystem
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*line=all*, *line=buffer*:::
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which complete using lines in all buffers (*line=all*)
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or only the current one (*line=buffer*)
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*option=<opt-name>*:::
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where *opt-name* is an option of type 'completions' whose
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contents will be used
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*static_words* `str-list`::
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list of words that are always added to completion candidates
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when completing words in insert mode
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*extra_word_chars* `codepoint-list`::
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a list of all additional codepoints that should be considered
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as word character. This must be set on the buffer, not the window,
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for word completion to offer words containing these codepoints.
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*matching_pairs* `codepoint-list`::
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_default_ ( ) { } [ ] < > +
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a list of codepoints that are to be treated as matching pairs
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for the *m* command.
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*autoreload* `enum(yes|no|ask)`::
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_default_ ask +
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auto reload the buffers when an external modification is detected
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*writemethod* `enum(overwrite|replace)`::
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_default_ overwrite +
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method used to write buffers to file, `overwrite` will open the
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existing file and write on top of the previous data, `replace`
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will open a temporary file next to the target file, write it and
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then rename it to the target file.
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*debug* `flags(hooks|shell|profile|keys|commands)`::
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dump various debug information in the '\*debug*' buffer
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*idle_timeout* `int`::
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_default_ 50 +
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timeout, in milliseconds, with no user input that will trigger the
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*PromptIdle*, *InsertIdle* and *NormalIdle* hooks, and autocompletion.
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*fs_check_timeout* `int`::
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_default_ 500 +
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timeout, in milliseconds, between checks in normal mode of modifications
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of the file associated with the current buffer on the filesystem.
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*modelinefmt* `string`::
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A format string used to generate the mode line, that string is
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first expanded as a command line would be (expanding '%...{...}'
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strings), then markup tags are applied (see
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<<faces#markup-strings,`:doc faces markup-strings`>>)
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Two special atoms are available as markup:
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*`{{mode_info}}`*:::
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Information about the current mode, such as `insert 3 sel` or
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`prompt`. The faces used are StatusLineMode, StatusLineInfo,
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and StatusLineValue.
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*`{{context_info}}`*:::
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Information such as `[+][recording (@)][no-hooks][new file][fifo]`,
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in face Information.
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The default value is '%val{bufname} %val{cursor_line}:%val{cursor_char_column} {{context_info}} {{mode_info}} - %val{client}@[%val{session}]'
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*ui_options* `str-to-str-map`::
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a list of `key=value` pairs that are forwarded to the user
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interface implementation. The NCurses UI support the following options:
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*ncurses_set_title*:::
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if *yes* or *true*, the terminal emulator title will
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be changed
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*ncurses_status_on_top*:::
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if *yes*, or *true* the status line will be placed
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at the top of the terminal rather than at the bottom
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*ncurses_assistant*:::
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specify the nice assistant displayed in info boxes,
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can be *clippy* (the default), *cat*, *dilbert* or *none*
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*ncurses_enable_mouse*:::
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boolean option that enables mouse support
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*ncurses_change_colors*:::
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boolean option that can disable color palette changing if the
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terminfo enables it but the terminal does not support it.
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*ncurses_wheel_down_button*, *ncurses_wheel_up_button*:::
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specify which button send for wheel down/up events
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*ncurses_shift_function_key*:::
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Function key from which shifted function key start, if the
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terminal sends F13 for <s-F1>, this should be set to 12.
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*ncurses_padding_char*:::
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character used to indicate the area out of the displayed buffer
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(defaults to '~')
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*ncurses_padding_fill*:::
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if *yes* or *true*, fill the padding area with the padding character
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instead of displaying a single character at the beginning of the
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padding line (defaults to *false*)
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[[startup-info]]
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*startup_info_version* `int`::
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_default_ 0 +
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Controls which messages will be displayed in the startup info box, only messages
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relating to a Kakoune version greater than this value will be displayed. Versions
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are written as a single number: Like `20180413` for version `2018.04.13`
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== Current values
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The current value for an option can be viewed using
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<<expansions#option-expansions, `:doc expansions option-expansions`>>.
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For example, the current value of the `BOM` option can be displayed in the
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status line using the `echo` command:
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--------------
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echo %opt{BOM}
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--------------
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The current values for all options can be dumped to the *\*debug*\* buffer using
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the following command:
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-------------
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debug options
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-------------
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