git spr update --count missed some commits at the base and created PRs for items higher up the stack instead.

[chriscz]

I recently used update --count X and it skipped creating PRs from the base of my branch and then continued to create PRs for things I didn't want, i.e. items beyond the number that I specified, X+1, X+2 etc.

I will try to get a reproduction before I merge my work, and submit a fix.

Possibly related tickets:

• Reordering commits confuses spr #385

[chriscz]

It looks like alignLocalCommits in spr/spr.go is dropping these commits because they are not aligning with what is already in the PR on GitHub.

This change was introduced to support merge queues: 5f9733c

[chriscz]

I tried for a while to debug this though my go is quite rusty and didn't manage to fix it yet.

• spr was trying to update the stack incorrectly and crashed. Consequently I saw some of the PR targets changed to develop and no longer seem to be stacked
• After this initial crash spr just tries to create new PRs for everything, probably creating a completely new stack
• I also notice that all of the prior PRs are no longer being returned in the method below. Instead only a single one is returned.
  

  spr/github/githubclient/client.go

  Line 226 in 2c5a21f

  func matchPullRequestStack(

spr probably needs some robustness / recovery in a scenario like this. Possibly looking to the source branch (spr/main/xxxx) for guidance on what the real commit id is, it may already be doing this and I missed it.

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My PR stack is currently a mess with targets having been incorrectly set and I'm not unable to get it fixed. I'm going to put a hold on using spr for the moment and maybe look at this again in the future. It's a bit unfortunate as I was enjoying it so much.

I'll see if the last thing I can do is create a decent reproduction, but that may only be in a month or so.