Paul Eggert wrote: > For now, though, it's better not to use the undocumented var.
Definitely, yes. The role of 'atlocal.in' is documented, so we can use that. as_nl is not documented, so we shouldn't use it. And probably it won't be documented, because POSIX now supports writing $'\n' without need for a variable [1], and while not all shells support this yet, those which don't ([2], column 12) will vanish over time. Bruno [1] https://pubs.opengroup.org/onlinepubs/9799919799.2024edition/utilities/V3_chap02.html#tag_19_02_04 [2] https://gitweb.git.savannah.gnu.org/gitweb/?p=gnulib/maint-tools.git;a=blob;f=test-programs/sh-features;h=787580a5c4172df94f0edb1647542a6b0b8387e8;hb=HEAD
