sh`, what is the closest to `;;&` (`bash`'s fallthrough)? by Ed Morton

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Oct 29, 2025 at 18:12	history	edited	Ed Morton	CC BY-SA 4.0	added 17 characters in body
Oct 29, 2025 at 14:44	comment	added	Ed Morton		@StéphaneChazelas when you said `noways` - was that a typo and you meant `nowadays`? I suspect I have been thinking of the Bourne shell from days of yore when I think of `sh`.
Oct 29, 2025 at 14:15	comment	added	Toby Speight		@Ed, yes I did mean that the variables should be set `false` before the code in question. There are alternatives (e.g. evaluating with a fallback: `${set_cflags-false}`), but I feel that then goes backwards again on the readability.
Oct 29, 2025 at 13:44	comment	added	Stéphane Chazelas		If you have a system that doesn't have a `sh` utility, then it's off-topic here. Don't confuse `sh` (noways an interpreter for the POSIX shell language based on a subset of the ksh88 language) with the Bourne shell (its predecessor) or its clones or the Thompson shell which predates it. There are POSIX `sh` implementations based on the Bourne shell such as bosh or ksh88 and some based on some of its clones such as dash (based on Almquist shell) or mksh (based on Forsyth shell)
Oct 29, 2025 at 13:20	history	edited	Ed Morton	CC BY-SA 4.0	added 657 characters in body
Oct 29, 2025 at 12:53	comment	added	Ed Morton		@TobySpeight it's been so long since I used `sh` (40 years maybe?), that a) I don't remember much about it's syntax and, b) I think it's syntax may have evolved since I last used it, and I don't have `sh` on any machine I have access to to test with so I was just sticking to the basics I was 99% sure of :-). If storing a true/false command in the variable works - sounds good. Although, I expect that'd mean you'd need to add code to initialise them all to `false` before the `case` but that's not a bad idea anyway.
Oct 29, 2025 at 12:50	comment	added	Toby Speight		Perhaps not to your taste, but an option I sometimes use is for the variables to hold commands - namely `false` or `true`. Then we are able to `if $set_cflags` with no need to execute `[`.
Oct 29, 2025 at 12:46	history	answered	Ed Morton	CC BY-SA 4.0