the scary thing about is when in file formats it has stuff like:

file: refers to a file
some-special-string: does a special thing

and that just invites the problem of someone using some-special-string as a file name

pls, anyone who does
do not ever do anything like this
keep your formal grammars unambiguous

if you do not, Ada Lovelace will come down from Programmer Heaven and smite you

@Shamar idk, read it in some manpage the other day, not sure which
but similar problems apply to a lot of the system, eg. how basically nothing can handle spaces in file names

(hot take, $ifs should only contain tab and newline, or better yet, there should be no $ifs)

@Shamar this isn't really a Plan 9 specific problem, but it's one of those things that mess up an otherwise nice system

@Shamar @xj9 You only can't use 0x0 because of C's limitations. :blobshrug:
IMHO, type Path = List String (maybe NonEmptyList or something) makes more sense than using char*.

It makes sense in historical context, sure, but it doesn't have to always be like this.

And not all limits make you think, some are just practical because an upper bound is often nice to have. Eg. 255 characters per file name is probably a relief for on-disk file system formats.


@Shamar @xj9 Software isn't special in this regard btw, every protocol works like this. They restrict things so that other (hopefully useful) things can happen more easily.

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