Improves workaround for MacOS file watching quirks

[tmat]

Fixes #47912

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[Forgind]

I think this is a reasonable direction, though I'm also wondering if an alternative might be to try to figure out that a file is a backup and not watch it at all if so. (One option on that front could just be checking for ~ at the end and seeing if the path without that would be a known file)

[tmat]

a file is a backup and not watch it at all if so.

The problem is there is a not a standardized convention for the names of these files. Each editor has their own naming for these files.

[Forgind]

a file is a backup and not watch it at all if so.

The problem is there is a not a standardized convention for the names of these files. Each editor has their own naming for these files.

Yeah; it'd be a heuristic for sure. I've just noticed ending in ~ seems to be a pretty common convention (notably on linux/mac)

[angularsen]

From a bit of googling, it does seem like ~ is widely used for temp files.

I think it could be wise to not watch these by default, until it becomes more easily configurable what files to include/exclude in watch, which if I'm reading right is tracked by #45539.