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prezto/modules/git/functions/git-hub-shorten-url

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#
# Shortens GitHub URLs.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
# function git-hub-shorten-url {
local url="$1" code="$2"
if [[ "$url" == '-' ]]; then
read url <&0
fi
if [[ -z "$url" || ! "$url" =~ ^https?:\/\/.*github.com\/ ]]; then
print "usage: $0 [ url | - ] [code] ; url must be a github.com URL" >&2
return 1
fi
if (( $+commands[curl] )); then
curl -s -i 'https://git.io' -F "url=$url" ${(s: :)code:+ -F "code=$code"} | sed -n 's/^Location: //p'
else
print "$0: command not found: curl" >&2
return 1
fi
# }