Date: Fri, 26 Jun 2020 22:05:05 +0000 From: "Valeriy E. Ushakov" <u...@netbsd.org> Message-ID: <20200626220505.e9030f...@cvs.netbsd.org>
| Modified Files: | src/usr.bin/printf: printf.1 | | Log Message: | Drop redundant quoting in the nested printf example. I don't think that is correct, the quotes around 0x0A were obviously redundant (and changing it to 0x0a doesn't alter that), but those around the $(printf ...) are not - without those the result from the command substitution would be subject to field splitting, and if IFS happens to contain a \ or an octal digit, bad things will happen. In general it is never a good idea to omit quotes around sh word expansions except in the cases where you actually want field splitting (or pathname expansion, etc) to happen (and sometimes except in the contexts where those don't occur anyway, like x=$whatever) For the example in question, try running it with IFS=1 or IFS=2 to see what I mean. kre