Add support for embedded "{}"

[int3]

Given

find . -exec foo{}bar \;

GNU find will replace {} by the filename. This commit matches that behavior.

Note that this is not required by the POSIX spec.

The GNU testsuite doesn't cover this case, so I've added a test in this repo.

I'm new to Rust, so please be gentle (:

[codecov[bot]]

Codecov Report

Merging #210 (30a2245) into main (a3287a9) will increase coverage by 0.16%. The diff coverage is 92.00%.

@@            Coverage Diff             @@
##             main     #210      +/-   ##
==========================================
+ Coverage   58.24%   58.41%   +0.16%     
==========================================
  Files          30       30              
  Lines        3504     3523      +19     
  Branches      784      786       +2     
==========================================
+ Hits         2041     2058      +17     
  Misses       1175     1175              
- Partials      288      290       +2     

Impacted Files	Coverage Δ
tests/exec_unit_tests.rs	88.99% <88.23%> (-0.14%)	:arrow_down:
src/find/matchers/exec.rs	87.17% <100.00%> (+0.69%)	:arrow_up:

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[int3]

The failing jobs don't seem to be related to my changes

[int3]

Did I bork the test runner somehow? Perhaps I shouldn't have force-pushed?

[sylvestre]

I wonder if this isn't an issue with out CI.

[sylvestre]

i am surprised that it didn't fix any GNU or BFS tests. Could you please have a look? thanks

[tavianator]

So I can confirm that locally it fixes the common/exec_substring test. Why doesn't that show up on CI? I think it's because the action downloads the most recent bfs-result.json from a run on the main branch: https://github.com/uutils/findutils/actions/runs/4257476104/workflow#L119-L127

But if you look at the runs on the main branch: https://github.com/uutils/findutils/actions?query=branch%3Amain

you'll see it includes this PR itself since the branch is int3:main. So somehow we need to tell action-download-artifact to only look at our main branch, not other branches that might be called main.

[int3]

Would you like me to make a new PR with a different branch name?

[int3]

Reopened with a different branch here: https://github.com/uutils/findutils/pull/213