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prezto/plugins/git/functions/git-hub

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# Open the GitHub repository in the browser.
local remote branches branch current_branch url
remote="${1:-origin}"
url=$(
git config -l \
| grep "remote.${remote}.url" \
| sed -En "s/remote.${remote}.url=(git|https?)(@|:\/\/)github.com(:|\/)(.+)\/(.+).git/https:\/\/github.com\/\4\/\5/p"
)
branches=($(
git branch -a \
| grep "remotes/${remote}" \
| sed -e 's/[ \*]*//g' -e "s:remotes/${remote}/::g"
))
current_branch="$(git-branch)"
branch="${2:-master}"
if [[ -z "$2" ]]; then
if (( $branches[(I)$current_branch] != 0 )); then
branch="$current_branch"
else
branch='master'
fi
fi
if [[ -n "$url" ]]; then
url="${url}/tree/${branch}"
if (( $+commands[$BROWSER] )); then
"$BROWSER" "$url"
return 0
else
print "fatal: Browser not set or set to a non-existent browser." >&2
return 1
fi
else
print "fatal: Not a Git repository or origin remote not set." >&2
return 1
fi