git option normalization sample

git-option-normalization.sh

#!/usr/local/bin/bash
#
# https://git-scm.com/docs/git-rev-parse#_parseopt
# https://github.com/git/git/blob/master/git-sh-setup.sh#L81L85
# https://twitter.com/sngworks/status/933953271487610880
# https://twitter.com/onigra_/status/934453258688479232
#

GIT_REBASE_OPTIONS_SPEC="
git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] [<upstream>] [<branch>]
git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] --root [<branch>]
git-rebase --continue | --abort | --skip | --edit-todo
--
 Available options are
v,verbose!         display a diffstat of what changed upstream
q,quiet!           be quiet. implies --no-stat
autostash          automatically stash/stash pop before and after
fork-point         use 'merge-base --fork-point' to refine upstream
onto=!             rebase onto given branch instead of upstream
p,preserve-merges! try to recreate merges instead of ignoring them
s,strategy=!       use the given merge strategy
no-ff!             cherry-pick all commits, even if unchanged
m,merge!           use merging strategies to rebase
i,interactive!     let the user edit the list of commits to rebase
x,exec=!           add exec lines after each commit of the editable list
k,keep-empty	   preserve empty commits during rebase
f,force-rebase!    force rebase even if branch is up to date
X,strategy-option=! pass the argument through to the merge strategy
stat!              display a diffstat of what changed upstream
n,no-stat!         do not show diffstat of what changed upstream
verify             allow pre-rebase hook to run
rerere-autoupdate  allow rerere to update index with resolved conflicts
root!              rebase all reachable commits up to the root(s)
autosquash         move commits that begin with squash!/fixup! under -i
committer-date-is-author-date! passed to 'git am'
ignore-date!       passed to 'git am'
signoff            passed to 'git am'
whitespace=!       passed to 'git apply'
ignore-whitespace! passed to 'git apply'
C=!                passed to 'git apply'
S,gpg-sign?        GPG-sign commits
 Actions:
continue!          continue
abort!             abort and check out the original branch
skip!              skip current patch and continue
edit-todo!         edit the todo list during an interactive rebase
quit!              abort but keep HEAD where it is
"

echo "$GIT_REBASE_OPTIONS_SPEC" | git rev-parse --parseopt --stuck-long -- "--con" #=> set -- --continue --
echo "$GIT_REBASE_OPTIONS_SPEC" | git rev-parse --parseopt --stuck-long -- "--ab"  #=> set -- --abort --
echo "$GIT_REBASE_OPTIONS_SPEC" | git rev-parse --parseopt --stuck-long -- "--sk"  #=> set -- --skip --
echo "$GIT_REBASE_OPTIONS_SPEC" | git rev-parse --parseopt --stuck-long -- "--ed"  #=> set -- --edit-todo --