Official CC-BY-4.0 license text is not being matched correctly by LicenseCompareHelper.isTextStandardLicense()

[pmonks]

When org.spdx.utility.compare.LicenseCompareHelper.isTextStandardLicense().isDifferenceFound() is run on the official CC-BY-4.0 license text, it (incorrectly) returns true (i.e. the standard license was not matched). When I run org.spdx.utility.compare.LicenseCompareHelper.isTextStandardLicense().getDifferenceMessage() on it, I get:

Normal text of license does not match starting at line #5 column #9 "commons" when comparing to template text "

By exercising the Licensed Rights (defined below), You accept and agree to be bound by the terms a...".  Last optional text was not found due to the optional difference:
	Normal text of license does not match starting at line #5 column #29 "(" when comparing to template text " Creative Commons Attribution 4.0 International Public License

".  Last optional text was not found due to the optional difference:
	Normal text of license does not match starting at line #42 column #5 "example" when comparing to template text "

Considerations for the public: By using one of our public licenses, a licensor grants the public p...".  Last optional text was not found due to the optional difference:
	Normal text of license does not match starting at line #42 column #5 "example" when comparing to template text "

Considerations for the public: By using one of our public licenses, a licensor grants the public p...".  Last optional text was not found due to the optional difference:
	Normal text of license does not match starting at line #1 column #12 "4" when comparing to template text "Creative Commons"

I don't see any mismatches when looking at the CC-BY-4.0 SPDX template however.

This was reproduced with Spdx-Java-Library v1.11 and SPDX license list v3.23.

[pmonks]

Note: this also seems to be occurring for some of the CC-BY-*-4.0 variations, including:

• CC-BY-SA-4.0
• CC-BY-NC-4.0
• CC-BY-NC-SA-4.0
• CC-BY-ND-4.0
• CC-BY-NC-ND-4.0

(these are just the subset of CC-BY-*-4.0 licenses that I'm testing against - there may be issues with other variations too)

[goneall]

Thanks @pmonks for the analysis - I'm currently traveling for the next week or so - I'll take a look once I'm back

[pmonks]

As always no rush! I've been traveling a lot myself in recent weeks, so have also been less active than usual.