fix isTextFile partial rune read
fix isTextFile partial rune read

etsy/Hound,0xmohit/hound,etsy/Hound,gwindes/Hound,Kareo/Hound,sstarcher/Hound,0xmohit/hound,sstarcher/Hound,sstarcher/Hound,gwindes/Hound,gwindes/Hound,0xmohit/hound,etsy/Hound,Kareo/Hound,Kareo/Hound,Kareo/Hound,Kareo/Hound,etsy/Hound,sstarcher/Hound,gwindes/Hound,0xmohit/hound