Gaps in tree-view lines with musl libc

[stevenhoneyman]

Hi. Do you have any ideas as to what causes this display behaviour:

(normal glibc)

(musl libc)

It only happens with musl libc, but "tree 1.7.0" uses the same characters to display lines, and that works fine. Both are using the latest snapshot of ncurses, both on the same host, same terminal, same font.

[hishamhm]

The one on top is using ncurses in Unicode mode, the second one is in ASCII mode. What's the value of the $LANG and $LC_ALL variables on each case? To get Unicode mode, htop has to be compiled with --enable-unicode, and the libc must support locales such as en_US.UTF-8.

[stevenhoneyman]

Sorry for the delay in replying. I've just tested again using the latest upstream source of both musl libc & ncurses, and I still get this result. I am using --enable-unicode, and $LC_ALL is set to en_GB.UTF-8 in both cases. $LANG is unset.

Here is another program I compiled using the exact same terminal, libraries, variables, etc (the program is nbwmon):

That's the bit that's confusing me - all other programs that link to libncursesw.a work as expected. It's only htop that I've seen so far have this problem.