Updates to kmwString functions

A couple of weeks ago I published on this blog a set of functions for handling supplementary characters in JavaScript.  We have since fixed a few bugs in the code and have now made the kmwString script available on github at https://github.com/tavultesoft/keyman-tools

This update:

  • Fixes an error which could occur when only 1 parameter was passed to kmwSubstring and that parameter was negative
  • Fixed an incorrect NaN return value for kmwCodePointToCodeUnit when passed an offset at the very end of a string
  • Adds kmwCodeUnitToCodePoint function
  • Adds kmwCharAt function — which is basically just kmwSubstr(index,1)

Again, suggestions, comments, fixes and flames all gratefully received.

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