mirror of
https://github.com/fish-shell/fish-shell
synced 2024-11-14 17:07:44 +00:00
48 lines
1.3 KiB
Text
48 lines
1.3 KiB
Text
\section contains contains - test if a word is present in a list
|
|
|
|
\subsection contains-synopsis Synopsis
|
|
\fish{synopsis}
|
|
contains [OPTIONS] KEY [VALUES...]
|
|
\endfish
|
|
|
|
\subsection contains-description Description
|
|
|
|
`contains` tests whether the set `VALUES` contains the string `KEY`. If so, `contains` exits with status 0; if not, it exits with status 1.
|
|
|
|
The following options are available:
|
|
|
|
- `-i` or `--index` print the word index
|
|
|
|
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.
|
|
|
|
\subsection contains-example Example
|
|
|
|
If $animals is a list of animals, the following will test if it contains a cat:
|
|
|
|
\fish
|
|
if contains cat $animals
|
|
echo Your animal list is evil!
|
|
end
|
|
\endfish
|
|
|
|
This code will add some directories to $PATH if they aren't yet included:
|
|
|
|
\fish
|
|
for i in ~/bin /usr/local/bin
|
|
if not contains $i $PATH
|
|
set PATH $PATH $i
|
|
end
|
|
end
|
|
\endfish
|
|
|
|
While this will check if `hasargs` was run with the `-q` option:
|
|
|
|
\fish
|
|
function hasargs
|
|
if contains -- -q $argv
|
|
echo '$argv contains a -q option'
|
|
end
|
|
end
|
|
\endfish
|
|
|
|
The `--` here stops `contains` from treating `-q` to an option to itself. Instead it treats it as a normal string to check.
|