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3a23fdf359
Includes harmonizing the display of options and arguments, standardising terminology, using the envvar directive more broadly, adding help options to all commands that support them, simplifying some language, and tidying up multiple formatting issues. string documentation is not changed.
67 lines
1.4 KiB
ReStructuredText
67 lines
1.4 KiB
ReStructuredText
.. _cmd-contains:
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contains - test if a word is present in a list
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==============================================
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Synopsis
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--------
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.. synopsis::
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contains [OPTIONS] KEY [VALUES ...]
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Description
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-----------
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``contains`` tests whether the set *VALUES* contains the string *KEY*.
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If so, ``contains`` exits with code 0; if not, it exits with code 1.
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The following options are available:
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**-i** or **--index**
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Print the index (number of the element in the set) of the first matching element.
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**-h** or **--help**
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Displays help about using this command.
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Note that ``contains`` interprets all arguments starting with a **-** as an option to ``contains``, until an **--** argument is reached.
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See the examples below.
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Example
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-------
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If *animals* is a list of animals, the following will test if *animals* contains "cat":
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::
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if contains cat $animals
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echo Your animal list is evil!
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end
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This code will add some directories to :envvar:`PATH` if they aren't yet included:
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::
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for i in ~/bin /usr/local/bin
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if not contains $i $PATH
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set PATH $PATH $i
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end
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end
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While this will check if function ``hasargs`` is being ran with the **-q** option:
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::
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function hasargs
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if contains -- -q $argv
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echo '$argv contains a -q option'
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end
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end
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The **--** here stops ``contains`` from treating **-q** to an option to itself.
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Instead it treats it as a normal string to check.
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