Counting positive lines in a git diff-CodePudding

It is easy to count the lines of code between two branches and know the net delta. Is there a way to measure the added/edited lines of code in a git merge, ignoring the removed lines?

CodePudding user response：

The simplest way is to use git diff and grep for that marker at the beginning of added lines, but removing since it's for file paths.

git diff <sha-before-merge> <sha-after-merge> |
   grep -v '^   ' |
   grep '^ ' |
   wc -l

Although using --numstat might be even easier:

git diff --numstat <sha-before-merge> <sha-after-merge> |
   awk '{ s  = $1 } END { print s }'

the git diff command gives you the number of added lines in each file in the first column, and the awk one-liner tallies it.