trying directories in path one by one

[Mandar Mitra <mandar.mitra@xxxxxxxxx>]

Hello,

If I have a command that is available in multiple directories in PATH, zsh's behaviour suggests that it tries them in turn until one succeeds. Is there an option / environment variable / similar that I can use to turn this off?

For example, pip could be available from both a virtualenv and the system location (/bin). If the virtualenv pip fails, I'd like to know right away, without the stderr messages getting lost in the voluminous output from /bin/pip.

I looked in the FAQ and man zshoptions, and didn't find a direct answer to this question (HASH_CMDS seemed tangentally related, though). I also asked Claude, which pointed me to Src/exec.c in the zsh source, but said it didn't know of a zsh option that disables the fallthrough.

Many thanks for any pointers, suggestions, etc.
Mandar.