ascheman commented on PR #13269:
URL: https://github.com/apache/maven/pull/13269#issuecomment-5828911460

   Heads-up: CI is red on this PR — `initial-build` fails at the 
`test-mvn-path-conversion` exec (project `apache-maven`), and it's caused by 
this change.
   
   All the path-*conversion* assertions pass (`ok - POSIX/CYGWIN/MINGW/MSYS 
…`); the script then aborts (it runs under `set -e`) at the first `-f` scenario:
   
   ```sh
   output=`run_mvn_with_args CYGWIN_NT-10.0 "$stub_dir" -f 
/cygdrive/c/temp/pom.xml validate`
   ```
   
   Root cause: this PR makes a non-existent `-f`/`--file` a **fatal early 
exit** in the launcher — `find_file_argument_basedir`'s `exit 1` is now 
propagated up (the correct fix for the double-error). Previously that "POM file 
… does not exist" message was printed but **non-fatal**, so the launcher 
continued. `test-mvn-path-conversion.sh` passes **simulated, non-existent** 
`-f` paths — it only checks path *conversion*, with `java` stubbed, so the file 
never had to exist — and under `set -e` the now-fatal exit aborts the test 
before it can assert the conversion.
   
   The behavior change is right; the test just needs to catch up — e.g. `touch` 
a real file at each `-f` path the test passes (or point them at an existing 
stub) so the existence check passes and the conversion assertions still run. 
(`-s` scenarios are unaffected — settings files aren't existence-checked in the 
launcher.)
   


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