mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-24 06:30:47 +08:00
2a98b7a593
man(1) uses lowercase placeholders but we usually don't. Additionally, the new synopsis autoformatting only recognizes placeholders if they are uppercase. Use uppercase for all placeholders.
63 lines
1.3 KiB
ReStructuredText
63 lines
1.3 KiB
ReStructuredText
.. _cmd-contains:
|
|
|
|
contains - test if a word is present in a list
|
|
==============================================
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
.. synopsis::
|
|
|
|
contains [OPTIONS] KEY [VALUES ...]
|
|
|
|
Description
|
|
-----------
|
|
|
|
``contains`` tests whether the set *VALUES* contains the string *KEY*.
|
|
If so, ``contains`` exits with code 0; if not, it exits with code 1.
|
|
|
|
The following options are available:
|
|
|
|
- **-i** or **--index** print the word index
|
|
|
|
Note that ``contains`` interprets all arguments starting with a **-** as an option to ``contains``, until an **--** argument is reached.
|
|
|
|
See the examples below.
|
|
|
|
Example
|
|
-------
|
|
|
|
If *animals* is a list of animals, the following will test if *animals* contains "cat":
|
|
|
|
::
|
|
|
|
if contains cat $animals
|
|
echo Your animal list is evil!
|
|
end
|
|
|
|
|
|
This code will add some directories to :envvar:`PATH` if they aren't yet included:
|
|
|
|
::
|
|
|
|
for i in ~/bin /usr/local/bin
|
|
if not contains $i $PATH
|
|
set PATH $PATH $i
|
|
end
|
|
end
|
|
|
|
|
|
While this will check if function ``hasargs`` is being ran with the **-q** option:
|
|
|
|
::
|
|
|
|
function hasargs
|
|
if contains -- -q $argv
|
|
echo '$argv contains a -q option'
|
|
end
|
|
end
|
|
|
|
|
|
The **--** here stops ``contains`` from treating **-q** to an option to itself.
|
|
Instead it treats it as a normal string to check.
|