Component Names in Custom Libraries

[pipingguy]

Why are some keyboard characters such as "&" and "+" replaced by an underscore when saving a new component to subject location? Can someone provide a list of other disallowed characters?

[TIG]

There is also the # swap, and also any of the 'forbidden characters' in filename, like |/:<>?*" and <space> at the start/end and also probably % ?

[Dave R]

I expect they are forbidden because they are the file name of the resulting SKP file. I suppose you could lookup forbidden characters in file names and you'd have your list.

[pipingguy]

So I just tried this:

Component name given to library:
~!@#$%^&*()_+-=/*{}[]|\:";'<>?,/

Component name accepted by library:
~!@_$%_()-___{}_______'_____

Therefore, these were converted to underscores:
^&_+=/[]|:";<>?,/

Tried saving a skp file as:
~!@#$%^&*()_+-=/*{}[]|\:";'<>?,/

Result:
"invalid file name"

Tried saving a skp file as:
~!@_$%_()-___{}_______'_____

Result:
~!@_$%_()-___{}_______'_____

Conclusion:
I am bummed-out about losing & and/or + in my component names. Oh well.