Hello Rick, On 9/23/19 12:50 AM, Rick Stanley wrote: > Thank you for the update. > > I am sorry you have interpreted my request as a demand. It was not > meant or presented as such. Okay. Thanks, Michael > On Sun, 2019-09-22 at 23:01 +0200, Michael Kerrisk (man-pages) wrote: >> Hello Rick, >> >> On 9/20/19 4:19 PM, Rick Stanley wrote: >>> Greetings! >>> >>> In the man pages, both in Linux and online in multiple sites, the >>> pre >>> and post operators are listed as equal precedence. Two different >>> web >>> sites list them on different levels: >>> >>> http://man7.org/linux/man-pages/man7/precedence.7.html >>> Level 1 >>> >>> https://linux.die.net/man/7/operator >>> Level 2 >>> >>> Linux `man operator` list them on the second level, with right to >>> left >>> associativity: >>> >>> Operator Associativity >>> () [] -> . left to right >>> ! ~ ++ -- + - (type) * & sizeof right to left >>> ... >>> >>> Section "A.2.1 Expressions" of both the C99 & C11 C Draft >>> Standards, >>> list them on different levels: >>> >>> postfix ++ & -- on level 1, with left to right associativity >>> >>> prefix ++ & -- on level 2, with right to left associativity >> >> So, Harbison & Steele also seems to agree here. Things changed since >> K&R! I've fixed the page: >> >> Operator Associativity Notes >> () [] -> . ++ -- left to right [1] >> ! ~ ++ -- + - (type) * & sizeof right to left [2] >> [...] >> >> The following notes provide further information to >> the above ta‐ >> ble: >> >> [1] The ++ and -- operators at this precedence level are the >> post‐ >> fix flavors of the operators. >> [2] The ++ and -- operators at this precedence level are >> the pre‐ >> fix flavors of the operators. >> >>> Please review this and all the operator precedence and >>> associativity in >>> the current man page "man operator" against the official C99 & C11 >>> Standards documents, plus the current working draft for the next >>> version of the Standard. >> >> You are free to do so. But please don't demand that someone else >> does so, even if you say "please". >> >> Thank you for the bug report! >> >> Cheers, >> >> Michael >> -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
