Merge branch 'bl/pretty-shorthand-config-fix'

The "--pretty=<shortHand>" option of the commands in the "git log" family, defined as "[pretty] shortHand = <expansion>" should have been looked up case insensitively, but was not, which has been corrected. * bl/pretty-shorthand-config-fix: pretty: find pretty formats case-insensitively pretty: update tests to use `test_config`