flakiness in devtools/completion.bash

[andychu]

OK this is actually trivial: just source devtools/completion.bash

https://oilshell.zulipchat.com/#narrow/stream/121539-oil-dev/topic/oil-dev.20completion

Maybe I should call it devtools/oil-dev.bash ?

Originally posted by @andychu in #99 (comment)

[andychu]

Repro in BOTH bash and OSH !!

build/dev.sh m<TAB>     # this works, completes 'minimal'

build/dev.sh minimal <TAB>  # try to complete a second word

# now backspace

build/dev.sh m<TAB>   # no longer works!!!

I don't understand why this is. But I think it's because the complex case statements in devtools/completion.bash are wrong.

[andychu]

Possible Strategy: instead of fixing this bug in old code that I don't particularly like, maybe develop some simpler Oil API and use that? rewrite the whole thing?

Functionality:

• completes the first word
• completes unit tests after the unit action.

This should be done by some more obvious pattern matching?

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Other notes: there is some weirdness about how this composes with Debian's bash-completion. I remember there was a bug where I took over *.sh and that broke some debian stuff.