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zim/modules/git/functions/is-true
Matt Hamilton 0c1aa6e133 [git] fix some functions
* remove unneeded explination and authorship comments (as it's
noted in the README.md)

* s/git/command git/ (see issue #30)

* add is-true function, as it is required by a few other functions.
2016-02-04 15:33:12 -05:00

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# Checks a boolean variable for "true".
# Case insensitive: "1", "y", "yes", "t", "true", "o", and "on".
is-true() {
[[ -n "$1" && "$1" == (1|[Yy]([Ee][Ss]|)|[Tt]([Rr][Uu][Ee]|)|[Oo]([Nn]|)) ]]
}