contains - test if a word is present in a list¶
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 index (number of the element in the set) of the first matching element. 
- -h or --help
- Displays help about using this command. 
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 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.
