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53 lines
1.3 KiB
ReStructuredText
53 lines
1.3 KiB
ReStructuredText
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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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`. If so, `contains` exits with status 0; if not, it exits with status 1.
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The following options are available:
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- `-i` or `--index` print the word index
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Note that, like GNU tools and most of fish's builtins, `contains` interprets all arguments starting with a `-` as options to contains, until it reaches an argument that is `--` (two dashes). 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 it contains a cat:
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\fish
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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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\endfish
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This code will add some directories to $PATH if they aren't yet included:
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\fish
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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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\endfish
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While this will check if `hasargs` was run with the `-q` option:
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\fish
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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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\endfish
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The `--` here stops `contains` from treating `-q` to an option to itself. Instead it treats it as a normal string to check.
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