The previous code would cause failures to find the Compose file if one
of the environment variables LC_ALL, LC_CTYPE or LANG are set to the
empty string.
The description of the fallback procedure in loclale(7) talks about
"non-null environment variable"; I interpreted this to mean the
environment variable is unset, but it actually means unset or empty (I
verified this by looking at what glibc and musl do).
A recent bug in systemd https://github.com/systemd/systemd/issues/6407
exposed this issue. It causes these these variables to be set to the
empty string in TTY sessions.
Reported by "doodoo" in https://bbs.archlinux.org/viewtopic.php?id=228658
Signed-off-by: Ran Benita <ran234@gmail.com>
See the NOTES section of getenv(3). Somewhat obscure but it doesn't hurt
to reassure the readers who know about this.
Signed-off-by: Ran Benita <ran234@gmail.com>
xkbcommon-compose is a Compose implementation for xkbcommon. It mostly
behaves like libX11's Compose, but the support is somewhat low-level and
is not transparent like in libX11. The user must add some supporting code
in order to utilize it.
The intended audience are users who use xkbcommon but not a full-blown
input method. With this they can add Compose support in a straightforward
manner, so they have a fairly complete keyboard input for Latin-like
languages at least.
See the header documentation for details.
Signed-off-by: Ran Benita <ran234@gmail.com>
Ran Benita