`spr` stack trace on every "normal" error can be confusing

[astutecat]

Hi!

Thanks for making such a neat tool to do stacked PRs. I'm really enjoying using it.

One thing that is confusing though is that there is often a stacktrace that gets printed out when a git command (for example) fails "normally" -- for example, if I don't stage any files before running git spr amend.

In this situation, it seems the stack trace isn't really helpful since there isn't a bug in spr, and the information message I really need to read is the output from the git command, which gets pushed up by the stack trace.

Would there be a way for this to not output a stack trace, and print it when supplying the --verbose flag? Or, failing that, can I have it so that I can suppress the stack traces with an environment variable?

[ejoffe]

Can you please paste a sample output with the stack trace

[eduard-nomi]

git spr a and choose any commit

nothing added to commit but untracked files present (use "git add" to track)
panic: exit status 1

goroutine 1 [running]:
github.com/ejoffe/spr/git/realgit.(*gitcmd).MustGit(0x0?, {0x140002fc240?, 0x10266cfce?}, 0x140002dda73?)
        /Users/runner/work/spr/spr/git/realgit/realcmd.go:70 +0x4c
github.com/ejoffe/spr/spr.(*stackediff).AmendCommit(0x140002de770, {0x102898f30?, 0x0?})
        /Users/runner/work/spr/spr/spr/spr.go:83 +0x3f0
main.main.func7(0x140002f6480?)
        /Users/runner/work/spr/spr/cmd/spr/main.go:303 +0x3c
github.com/urfave/cli/v2.(*Command).Run(0x140002f6480, 0x14000294980)
        /Users/runner/go/pkg/mod/github.com/urfave/cli/v2@v2.8.1/command.go:169 +0x4f8
github.com/urfave/cli/v2.(*App).RunContext(0x14000284b60, {0x102898fd8?, 0x102cf2ce0}, {0x1400013a000, 0x2, 0x2})
        /Users/runner/go/pkg/mod/github.com/urfave/cli/v2@v2.8.1/app.go:341 +0x85c
github.com/urfave/cli/v2.(*App).Run(...)
        /Users/runner/go/pkg/mod/github.com/urfave/cli/v2@v2.8.1/app.go:247
main.main()
        /Users/runner/work/spr/spr/cmd/spr/main.go:365 +0x1b48

git rev-parse --show-toplevel
0.17.6 : 2026-04-20T16:32:09Z : 2a36098