Handle E2BIG

[zimbatm]

On POSIX systems, there is a limit to the number of files that can be passed as arguments. I thought that limit was 1024 arguments, and I was wrong. It's complicated. It seems like the limit is actually counted on the amount of memory it takes instead of the number of argument. Or both. Depending on the system.

Apparently, on Linux it's currently 2MB, which probably enough with the type of projects that treefmt will deal with. At that size, other constraints in terms of performance improvement would change the project's design anyway.

At some point we might want to calculate if we reach that limit, and invoke the formatter multiple times, splitting the number of files equally between invocations.

source:

• https://unix.stackexchange.com/questions/120642/what-defines-the-maximum-size-for-a-command-single-argument
• https://stackoverflow.com/questions/48014798/raise-command-line-argument-string-size-limit-arg-max-mac-osx