Can't open files with two consecutive periods in name

SDK Bug Reports
1

I received a comment on my app Pocket Reader:

I found a reproducible crash: if a filename has two periods between the name and extension it will crash the Playdate (file..txt). I made a typo when creating files to read.

I have confirmed that file.listFiles will list such files, but file.open and datastore.read will both return nil. This is true for consecutive periods anywhere in the file name.

2

One of those times where I wonder: do you even want this fixed? Is it a valid filename? Would you rather find out you made a typo or let that typo live on and confuse you or anyone else later?

Instead, you might check for nil and show an "invalid filename" error message

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3

My thinking is that if it's valid on your computer it should probably be valid on your Playdate as well. If people want ellipses in their filenames I don't think it's my job to say no, and it's not like I'm checking for other typos so that thinking is a bit weird to me. I also think if file.listFiles says it's a file then it should be possible to open it.

I'll leave it for Panic to decide though, this is just how I see it, and there might be some limitation I'm not aware of.

4

I think the main limitation is preventing devs to access files outside of their sandbox by using paths like:

myfolder/../../folder.of.an.other.game/file
5

Sure, but it'd be enough to block paths with ../ instead of paths with .. for that reason, right?

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