git-ls-files: look for '^c' instead of '^commit'.
treed3e4284029039e3d3b737495fb6ec661848a3cea
-rw-r--r-- 119 commits_by_year.plot
-rw-r--r-- 187 commits_by_year_month.plot
-rw-r--r-- 150 day_of_week.plot
drwxr-xr-x - doc
-rwxr-xr-x 24140 gitstats
-rw-r--r-- 1159 gitstats.css