`ls -CF` should generate tab and not space

[sylvestre]

Not far from
#3624

export C="./target/debug/coreutils "
rm -rf e
mkdir -p e/a2345 e/b
printf 'a2345/\tb/\n' > exp

${C}ls -CF e > out
diff -u out exp

tested by GNU:
bash util/run-gnu-test.sh tests/ls/stat-dtype.sh

[sylvestre]

#5397 might be a start

[tertsdiepraam]

This should be added to uutils-term-grid. I'm not a big fan of it myself, but we could support it, as long as formatting with only spaces is still possible.

[sylvestre]

I am wondering what is the use case to replace spaces by tabs in the terminal in general...

[tertsdiepraam]

Slightly less throughput of bytes maybe? I don't really know. The GNU docs just say "efficiency" (https://www.gnu.org/software/coreutils/manual/html_node/General-output-formatting.html).

[5igh5]

Hello. Never contributed to anything before, and this seems like something I could do. How do I start?

[tertsdiepraam]

Cool! This would first need to be implemented in the uutils-term-grid crate (which is in another repository), so that's where you can start. I would like to confirm with the other maintainers that we actually want this though. I guess that if we want to be fully compatible, we should. @sylvestre @cakebaker what do you think?

[sylvestre]

Yeah,we should do it

[tertsdiepraam]

Alright! @5igh5 so we should first fix up uutils-term-grid so that it has an option for using tabs (with an option to specify how many spaces are replaced by a single tab). Then we can release that and use it in ls.

[allaboutevemirolive]

@tertsdiepraam @sylvestre

Add Tab option #24

[5igh5]

So the issue in uutils-term-grid is solved then?

[sylvestre]

@5igh5 sorry but why do you think it is fixed ? :)