Kyle Lippincott <spectral@xxxxxxxxxx> writes: > Having just looked at the POSIX standard (I don't think I'm allowed to > copy from this document), the POSIX standard (POSIX.1-2024, at least) > explicitly leaves it unspecified whether the variable assignments > remain in effect after function execution. True. https://pubs.opengroup.org/onlinepubs/9799919799/utilities/V3_chap02.html#tag_19_09_01_02 also says that it is unspecified if the variable gets exported, and older version of dash that comes on Ubuntu 20.04 chooses *not* to export, which was the test breakage that triggered this whole discussion. The thread can be seen here: https://lore.kernel.org/git/xmqqbk2p9lwi.fsf_-_@gitster.g/ > Thanks for indulging my curiosity; should we include a statement in > the linter along the lines of `# POSIX.1-2024 explicitly does not > specify if variable assignment persists after executing a shell > function; some shells, such as ksh, have these variables remain.`? Giving a review (either positive or negative is fine, as long as it is constructive) on the update to CodingGuidelines https://lore.kernel.org/git/xmqqbk2p9lwi.fsf_-_@gitster.g/ may be a good place to start. Thanks.
