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Docs: describe the -add switch of set-option

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Delapouite 2018-04-05 11:35:03 +02:00
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doc/pages/options.asciidoc
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@ -10,13 +10,16 @@ scripts.
Options can be modified using the `set-option` command:
---------------------------------
set-option <scope> <name> <value>
set-option [-add] <scope> <name> <value>
---------------------------------
<scope> can be *global*, *buffer*, *window* or *current* (See
<<scopes#,`:doc scopes`>>). *current* relate to the narrowest scope in
<<scopes#,`:doc scopes`>>). *current* relates to the narrowest scope in
which the option is already set.
If `-add` is specified, the new value is *added* to the current one
instead of replacing it (the exact outcome depends on the type, see below).
[[unset-option]]
Options values can be unset in a specific scope with the `unset-option`
command:
@ -56,7 +59,8 @@ Some types are usable for user defined options while some other types
are exclusively available to built-in options.
*int*::
an integer number
an integer number.
`set -add` performs a math addition
*bool*::
a boolean value, yes/true or no/false
@ -69,11 +73,12 @@ are exclusively available to built-in options.
is not a valid regex
*coord*::
a line, column pair (separated by comma)
a line, column pair (separated by a comma)
*<type>-list*::
a list, elements are separated by a colon (:) if an element needs
to contain a colon, it can be escaped with a backslash
to contain a colon, it can be escaped with a backslash.
`set -add` appends the new element to the list
*range-specs*::
a `:` separated list of a pair of a buffer range (`<begin
@ -84,6 +89,7 @@ are exclusively available to built-in options.
updated according to all the buffer modifications that happened
since its timestamp.
See <<highlighters#specs-highlighters,`:doc highlighters specs-highlighters`>>)
`set -add` appends the new pair to the list
*line-specs*::
a `:` separated list of a line number and a corresponding flag
@ -92,6 +98,7 @@ are exclusively available to built-in options.
an option of this type, its lines gets updated according to all the
buffer modifications that happened since its timestamp.
See <<highlighters#specs-highlighters,`:doc highlighters specs-highlighters`>>)
`set -add` appends the new spec to the list
*completions*::
a `:` separated list of `<text>|<docstring>|<menu text>`
@ -104,7 +111,13 @@ are exclusively available to built-in options.
*flags(value1|value2|...)*::
a set of flags, taking a combination of the given values joined by a
'|' character
'|' character.
`set -add` adds the new flag to the combination
*<type>-to-<type>-map*::
a `:` separated list of `key=value` pairs.
`set -add` adds the new pair to the hashmap or replace an already
existing key.
== Builtin options