Impossible to activate for all files in secure directory

[guthypeter]

It is currently impossible to activate the extensionfor all files
We would like to configure the extension to secure all files in the secure directory. We tried to set the setting "basic.securedFiletypes" to ".*" which would match every extension, however this breaks the frontend (regex matches characters outside of the href= attribute). Then only setting that worked was [^'"]+ (which is clearly a hack, but matches everything until the closing " of the href attribute).

To Reproduce
Steps to reproduce the behavior:

1. Install Secure Downloads 3.0.0
2. Configure basic.securedFiletypes with .*
3. Open page with secured file on it
4. open secured file

Expected behavior

• The secured file should be opened.
• The page with the secured link should be rendered correctly.

Additional context
One setting, which we also tried, was .*? - this would match so few characters as possible (lazy) - but then we could not open the secured file, we got an error "Hash invalid! Access denied!"

[guthypeter]

One of the possibilities would be to make the pattern for the opening and closing apostrophes mandatory (see https://regexr.com/4d996)

[flossels]

Commit a00c061 introduces this feature.