1. #!/usr/bin/env zsh
2.  
3. function removeCurrentBranch {
4.   sed -E '/\*/d'
5. }
6.  
7. function removeMaster {
8.   sed -E '/master/d'
9. }
10.  
11. function leftTrim {
12.   sed -E 's/\*?[[:space:]]+//'
13. }
14.  
15. # Clean up all cleanly merged branches
16. for branch in $(git branch | removeCurrentBranch | removeMaster | leftTrim); do
17.     git rebase origin/master $branch &> /dev/null || git rebase --abort &> /dev/null
18.  
19.     if (git cherry origin/master $branch | grep '^+') {
20.         echo $branch is not merged
21.     } else {
22.         echo Deleting branch: $branch
23.     }
24. done
25.  
26. git branch --merged | removeCurrentBranch | removeMaster | leftTrim | xargs -n 1 git branch -d
27.  
28. # Ask about which other branches to delete interactively
29. file="/tmp/git-cleanup-branches-$(uuidgen)"
30.  
31. all_branches=($(git branch | removeCurrentBranch | leftTrim))
32.  
33. # write branches to file
34. for branch in $all_branches; do
35.   echo "keep $branch" >> $file
36. done
37.  
38. # write instructions to file
39. echo "
40. # All of your branches are listed above
41. # (except for the current branch, which you can't delete)
42. # change keep to d to delete the branch
43. # all other lines are ignored" >> $file
44.  
45. # prompt user to edit file
46. vim "$file"
47.  
48. # check each line of the file
49. cat $file | while read -r line; do
50.   # if the line starts with "d "
51.   if echo $line | grep --extended-regexp "^d " > /dev/null; then
52.     # delete the branch
53.     branch=$(echo $line | sed -E 's/^d //')
54.     git branch -D $branch
55.   fi
56. done
57.  
58. # clean up
59. rm $file
60.