On 2026-06-23 09:57:19 +0530, Anuradha Weeraman wrote: > Agreed with you in principle. To be clear though, this isn't new > or a regression and it has been parsed through the locale-aware > strtold() historically unfortunately, and so changing it would have > backward compatibility concerns.
The bug reporter Andrey ``Bass'' Shcheglov said that there was a change between Debian 8 and Debian 9. But perhaps he changed his locale? > However, a case could be made whether such behavior could make it > into a portable opt-in without changing the legacy default (POSIX > itself is silent, since shell floating point arithmetic is a ksh > extension), but that would be a discussion that would need to be > had upstream. Note that this also affects the comma operator when the decimal-point chracter is the comma (as noted at the end of the ksh93(1) man page, but a bit incorrectly). However, the comma operator is not specified by POSIX and is an extension in shells except the basic ones. > If you're willing to advocate a case for that, would > you mind opening an enhancement request on > https://github.com/ksh93/ksh/issues? https://github.com/ksh93/ksh/issues/999 See also: https://www.mail-archive.com/[email protected]/msg14429.html > Also, let me know if you have any concerns with the documentation > fix before I forward it upstream. At https://github.com/ksh93/ksh/issues/999 I've mentioned 2 issues with the ksh93(1) man page: * "Floating point constants follow the ANSI C programming language floating point conventions." This is not correct since C floating-point constants do not depend on the current locale. * "It is a good idea to leave a space after the comma operator in arithmetic expressions to prevent the comma from being interpreted as the decimal-point character in certain locales." But a space *before* the comma operator may also be needed: $ for s in "1,2" "1, 2" " 1 ,2" "1 , 2" ; do LC_ALL=fr_FR.utf8 ksh93 -c "echo \$(( $s ))" ; done 1,2 ksh93: 1, 2 : arithmetic syntax error ksh93: 1 ,2 : arithmetic syntax error 2 -- Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)
