[subset] bug fix in prune_langsys we should not cache visited langsys cause 2 different Record<Langsys> could have different Tag while pointing to the same Langsys, a langsys is redundant in Record<Langsys> A does not mean it's redundant in Record B. Same thing for visited_script. Also adding the number of features in the LangSys's feature list to the visited langsys count so it's more accurate. Plus some improvement in langsys compare()
This is HarfBuzz, a text shaping library.
For bug reports, mailing list, and other information please visit:
For license information, see COPYING.
For build information, see BUILD.md.
For custom configurations, see CONFIG.md.
For test execution, see TESTING.md.
Documentation: https://harfbuzz.github.io
