Issue in kn/kn-kgp.js

[MayuraVerma]

Keys f and F is wrongly implemented.
'f':
1st occurrence of 'f' should output '\u0CCD' (halant).
2nd occurrence of 'f' should output '\u200C' zero width non-joiner only when it is preceded by a '\u0CCD' (halant).
'F': should output '\u200D\u0CCD' only if it preceded by the letter 'ರ'.

In Kannada:
Zero width non-joiner: '\u200C' is used after only 'u0CCD'.
Zero width joiner: '\u200D' is used only in between ([ರ]಼) and 'u0CCD'.
These two invisible characters are not used anywhere else and should not be outputted anywhere.

Correct code:
[ '([ಕ-ಹೞ]಼?)f', '$1್' ],
[ '([ಕ-ಹೞ]಼?\u0CCD)f', '$1\u200C' ], // 0x200C Zero width non-joiner
[ '([ರ]಼?)F', '$1\u200D\u0CCD' ], // 0x200D Zero width joiner

Original code:
[ '([ಕ-ಹೞ]಼?\u200D)f', '$1್' ],
[ '(\u200D)F', '\u200C' ], // 0x200C Zero width non-joiner
[ 'F', '\u200D' ], // 0x200D Zero width joiner