Stage, test, and commit only some changes, then repeat

Hello,

I would like to stage, test, and commit only *some* changes of the working tree, and then repeat this process with the remaining changes.

My current solution (published at https://stackoverflow.com/a/70914962/2326961):

1. Stage some changes:
   ```
   git add -p file
   ```
2. Save away the remaining changes:
   ```
   git diff >patch
   git stash push -k
   ```
3. Test the staged changes.
4. Commit the staged changes:
   ```
   git commit
   ```
5. Restore the remaining changes:
   ```
   git apply patch
   ```
6. Go to step 1.

It is not ideal because a) it uses a patch file for saving the remaining changes; b) it uses the stash only for setting the working tree to the index state.

It would be ideal if I could save *only* the remaining changes in the stash instead of resorting to a patch file. How to do it?

Best,

Géry Ogam

[Info système] version git :: git version 2.35.1 cpu: x86_64 no commit associated with this build sizeof-long: 8 sizeof-size_t: 8 shell-path: /bin/sh uname: Darwin 20.6.0 Darwin Kernel Version 20.6.0: Wed Nov 10 22:23:07 PST 2021; root:xnu-7195.141.14~1/RELEASE_X86_64 x86_64 info compilateur : clang: 13.0.0 (clang-1300.0.29.3) info libc : aucune information de libc disponible $SHELL (typically, interactive shell): /bin/zsh

[Crochets activés]