changelog in html-pipeline-2.1.0

- old
+ new
@@ -1,30 +1,47 @@
-#!/usr/bin/env sh
+#!/bin/bash
 # Usage: script/changelog [-r <repo>] [-b <base>] [-h <head>]
 #
 #  repo: base string of GitHub repository url. e.g. "user_or_org/repository". Defaults to git remote url.
 #  base: git ref to compare from. e.g. "v1.3.1". Defaults to latest git tag.
 #  head: git ref to compare to. Defaults to "HEAD".
 #
 # Generate a changelog preview from pull requests merged between `base` and
 # `head`.
 #
-# https://github.com/jch/release-scripts
+# https://github.com/jch/release-scripts/blob/master/changelog
 set -e
 
 [ $# -eq 0 ] && set -- --help
+while [[ $# > 1 ]]
+do
+  key="$1"
+  case $key in
+    -r|--repo)
+    repo="$2"
+    shift
+    ;;
+    -b|--base)
+    base="$2"
+    shift
+    ;;
+    -h|--head)
+    head="$2"
+    shift
+    ;;
+    *)
+    ;;
+  esac
+  shift
+done
 
-# parse args
-repo='jch/html-pipeline'
-base=$(git tag -l | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -n 1)
-head="HEAD"
+repo="${repo:-$(git remote -v | grep push | awk '{print $2}' | cut -d'/' -f4- | sed 's/\.git//')}"
+base="${base:-$(git tag -l | sort -t. -k 1,1n -k 2,2n -k 3,3n | tail -n 1)}"
+head="${head:-HEAD}"
 api_url="https://api.github.com"
 
-echo "# $repo $base..$head"
-echo
-
 # get merged PR's. Better way is to query the API for these, but this is easier
 for pr in $(git log --oneline $base..$head | grep "Merge pull request" | awk '{gsub("#",""); print $5}')
 do
   # frustrated with trying to pull out the right values, fell back to ruby
-  curl -s "$api_url/repos/$repo/pulls/$pr" | ruby -rjson -e 'pr=JSON.parse(STDIN.read); puts "* #{pr[%q(title)]} [##{pr[%q(number)]}](#{pr[%q(html_url)]}) @#{pr[%q(user)][%q(login)]}"'
+  curl -s "$api_url/repos/$repo/pulls/$pr" | ruby -rjson -e 'pr=JSON.parse(STDIN.read); puts "* #{pr[%q(title)]} [##{pr[%q(number)]}](#{pr[%q(html_url)]})"'
 done