Hi Lawrence, 2022年10月8日(土) 16:04 Lawrence Velázquez <v...@larryv.me>: > On Sat, Oct 8, 2022, at 2:11 AM, Koichi Murase wrote: > > [...]. One thing to note is that the RETURN trap > > should be cleaned up inside the RETURN trap itself by running `trap - > > RETURN', or otherwise the RETURN trap is erroneously considered by > > Bash to be set for the caller function. > > The latter behavior is why I didn't describe RETURN as function-local > in my earlier message, but I forgot the workaround of unsetting > the trap from within itself. Nice.
Yeah, that is the tricky point. > Another strategy is to construct the complete trap string before > setting the trap, using whichever concatenation methods are preferred: I think the original idea of ``defer'', RAII, or similar features in other programming languages is to avoid that (i.e., requiring cleanup codes in a separate position of the code). -- Koichi
