the is_older_than function uses `test -nt`, but that test isn't in POSIX
Created attachment 849938 [details, diff] 0001-Eliminate-the-bashism-that-is-the-nt-test-operator.patch I already mailed this in, but attaching anyway.
Created attachment 849940 [details, diff] 0002-Add-a-gentoo-functions-test-suite.patch Ditto.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/gentoo-functions.git/commit/?id=1553c3bc0f0c18892aa03880183e95d0aa8089e9 commit 1553c3bc0f0c18892aa03880183e95d0aa8089e9 Author: Kerin Millar <kfm@plushkava.net> AuthorDate: 2023-02-06 01:02:57 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-02-06 03:08:50 +0000 Add a gentoo-functions test suite Presently, it tests only the is_older_than() function, and requires bash, in addition to mktemp(1) and touch(1) from GNU coreutils. Note that this commit does not touch the Makefile. Signed-off-by: Kerin Millar <kfm@plushkava.net> Bug: https://bugs.gentoo.org/579688 Signed-off-by: Sam James <sam@gentoo.org> test-functions | 115 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 115 insertions(+) https://gitweb.gentoo.org/proj/gentoo-functions.git/commit/?id=b6c180b9851ba94f68016836cbce2dde46e07165 commit b6c180b9851ba94f68016836cbce2dde46e07165 Author: Kerin Millar <kfm@plushkava.net> AuthorDate: 2023-02-06 00:59:11 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-02-06 03:08:33 +0000 Eliminate the bashism that is the -nt test operator Presently, the is_older_than() function uses the -nt operator as part of a test command. As was reported by bug 579688, it is not supported by POSIX. In fact, there is no way to perform this kind of check with sh(1) and the standard utilities alone. After some deliberation, I concluded that relying on GNU findutils would be the best course of action. Not only does it provide the -newerXY predicate, but it is also required by PMS to begin with. The revised function works by using the -newermm predicate to compare any of the pathnames that it encounters against the specified reference path. In the event that it encounters any other path that is newer than the reference path, it shall immediately quit, rendering it fairly efficient. In fact, there is no circumstance under which more than one line of output needs to be read from find(1). The prior implementation would aggressively follow directories, even for symlinks. This seems unwise to me. Nevertheless, find(1) is given the -L option so as to preserve this behaviour. Considerable care has been taken to ensure that the revised function remains exit status compatible. I performed 50 individual tests to that end. One obvious difference is that directories whose names begin with a dot will now be recursed. I determined that there was no obviously apparent reason that this should be an issue. Regardless, it would be trivial to alter this behaviour in the future, if so neeed. Please note that it requires findutils >=4.9 as a runtime dependency, owing to its use of -files0-from, which is far too useful an option to wish to forgo. It will prefer "gfind" over "find", if the former is found to exist. Incidentally, the revised function is resilient to the case in which the sh(1) implementation does not support local. The anti-pattern of using local (which is undefined behaviour) to define a variable, while simultaneously assigning it, is becoming a most tiresome one. Signed-off-by: Kerin Millar <kfm@plushkava.net> Bug: https://bugs.gentoo.org/579688 Signed-off-by: Sam James <sam@gentoo.org> functions.sh | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-)
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c0879d2ebced44576710300e0baf055328f0572a commit c0879d2ebced44576710300e0baf055328f0572a Author: Sam James <sam@gentoo.org> AuthorDate: 2023-02-06 04:33:24 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2023-02-06 04:33:46 +0000 sys-apps/gentoo-functions: add 0.18 Closes: https://bugs.gentoo.org/579688 Signed-off-by: Sam James <sam@gentoo.org> sys-apps/gentoo-functions/Manifest | 1 + .../gentoo-functions/gentoo-functions-0.18.ebuild | 27 ++++++++++++++++++++++ 2 files changed, 28 insertions(+)
Just for the record, the -nt and -ot primaries have been re-introduced. For further details, please refer to: https://gitweb.gentoo.org/proj/gentoo-functions.git/commit/?id=6cf0940b8d336eb35a970af2ffc819f55e3ab429
