From: Hussain Sitamouwala <husainsitamuwala21@gmail.com>

The command parses its options by hand, comparing each argument
against string literals. Use the parse-options API instead so that
option handling is consistent with other builtins and the help
output is generated from the option table.

Keep the existing behavior: --print stays a hidden, deprecated
synonym for --normalize, only --allow-onelevel can be negated, and
parsing stops at the first non-option argument so that options
after <refname> are still rejected.

Drop the early show_usage_if_asked() call, so that -h is handled by
parse_options().

Two minor differences come with parse_options(): unambiguous
abbreviations of long options, such as --norm, are accepted, and
"--" may now precede <refname>.

Signed-off-by: Hussain Sitamouwala <husainsitamuwala21@gmail.com>

Submitted-As: https://lore.kernel.org/git/pull.2470.v2.git.git.1793694813386.gitgitgadget@gmail.com
In-Reply-To: https://lore.kernel.org/git/pull.2470.git.git.1793298807397.gitgitgadget@gmail.com