Git aliases for opening sha URLs

gitaliases

 # +url+ displays the URL for origin. Works with https:// and git://
  url = !"git remote show origin | grep 'Fetch URL' | ruby -e \"puts 'https://' + STDIN.read.scan(/Fetch URL: git(?:@|:\\/\\/)(.*)/).join.sub('git://', '').sub(':', '/').sub('.git','')\""

  # +open-url+ opens the home page for this repository
  open-url = !"open `git url`"

  # +sha+ displays the current SHA
  sha = log -n1 --format="%H"

  # +sha-url+ shows the current show url for github
  sha-url = !"f() { if [ \"$1\" ]; then sha=$1 ; else sha=`git sha` ; fi ; echo `git url`/commit/$sha ; } ; f"

  # +open-sha+ opens the current SHA in the browser
  open-sha = !"f() { open `git sha-url $1` ; } ; f"