maybe you could also tell me how to change the regex on line 16 to allow a space (blank) as an allowed character in the base name
The regexp on line 16 is:
/^([-\@:\/\\\w.]+)$/
Which is a pretty simple regex, it says "start at the beginning of the string, then match one or more characters from this list of allowed characters, then you have to be at the end".
Now, what have you tried to add another character to the list of allowed characters?
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