The "patched" aspect specifically fixes the ZWJ issues that cause Tamil fonts to break. If you have ever typed "Ajith" in a fancy font and seen a square box or a missing character, the font wasn't patched. A successfully patched font renders the "U+200D" (Zero Width Joiner) perfectly, ensuring that the consonant cluster remains intact.
Tamil script requires stacked consonants (e.g., க்ஷ ). Standard fonts often space these awkwardly. A patched version manually tweaks the (space between letters) and ligatures so that "Ajith" (அஜித்) looks like a single, solid metal block rather than four separate floating symbols. ajith kumar font style patched