On macOS impossible to open file with comma followed by a space

[friebetill]

Describe the bug
Files with a comma followed by a space, e.g. "test, test.csv", cannot be opened correctly in the macOS version. The result consists of two non-existing files, even though only one file was selected.

Platform

• Desktop (Go)

Platform OS version
macOS Big Sur 11.5.2

How are you picking?

  final result = await FilePicker.platform.pickFiles();

[philenius]

@miguelpruivo I'd need a programming advice:

macOS returns the list of picked files as a string where each file is prefixed with alias . Multiple files are separated by comma:

alias macOS:Users:John:Desktop:bill.pdf, alias macOS:Users:John:Desktop:holidays.png

My current implementation splits the string by , (comma followed by blank). Now, @friebetill gave an example where users name their files bla, .pdf. Obviously, it was a bad idea to split the macOS string by , .

I could change the implementation to split by , alias . This would enable users to pick files named bla, .pdf. But, it couldn't handle the situation where user name files like bla, alias .pdf.

No matter which separator I use to split the string returned by macOS, there will be some file names that won't work. Do you have a better idea than splitting by , alias ?

[miguelpruivo]

@philenius I’d split it by , alias macOS: just to make sure. It’s highly unlikely that users will have files with that name.

Since we’re working with strings I’m afraid there isn’t much to do.

[philenius]

@miguelpruivo thanks for your quick response, then I'll do it that way.

Just for clarification: my example was slightly misleading. Actually, the first part that comes after alias represents the name of the volume on the macOS file system. It can be any value, e.g. macOS, macOS Base System, My USB, WD My Passport, etc.
So, I cannot split by , alias macOS: because the macOS part represents the volume's name. A better example would have been:

alias macOS:Users:John:Desktop:bill.pdf, alias macOS Base System:bin:bash, alias MyUSB:presentation.pptx