"U" for a good signature with unknown validity and "N" for no signature
- '%GS': show the name of the signer for a signed commit
- '%GK': show the key used to sign a signed commit
-- '%gD': reflog selector, e.g., `refs/stash@{1}`
-- '%gd': shortened reflog selector, e.g., `stash@{1}`
+- '%gD': reflog selector, e.g., `refs/stash@{1}` or
+ `refs/stash@{2 minutes ago`}; the format follows the rules described
+ for the `-g` option. The portion before the `@` is the refname as
+ given on the command line (so `git log -g refs/heads/master` would
+ yield `refs/heads/master@{0}`).
+- '%gd': shortened reflog selector; same as `%gD`, but the refname
+ portion is shortened for human readability (so `refs/heads/master`
+ becomes just `master`).
- '%gn': reflog identity name
- '%gN': reflog identity name (respecting .mailmap, see
linkgit:git-shortlog[1] or linkgit:git-blame[1])
- '%Cgreen': switch color to green
- '%Cblue': switch color to blue
- '%Creset': reset color
-- '%C(...)': color specification, as described in color.branch.* config option;
+- '%C(...)': color specification, as described under Values in the
+ "CONFIGURATION FILE" section of linkgit:git-config[1];
adding `auto,` at the beginning will emit color only when colors are
enabled for log output (by `color.diff`, `color.ui`, or `--color`, and
respecting the `auto` settings of the former if we are going to a
terminal). `auto` alone (i.e. `%C(auto)`) will turn on auto coloring
on the next placeholders until the color is switched again.
-- '%m': left, right or boundary mark
+- '%m': left (`<`), right (`>`) or boundary (`-`) mark
- '%n': newline
- '%%': a raw '%'
- '%x00': print a byte from a hex code