Update exit codes to use constants Implement actually searching the PATH, rather than implying `which` will do the correct thing. Removed some output Redefined is_exe to _exe inside of `which()`
Update exit codes to use constants
Implement actually searching the PATH, rather than implying `which` will do the correct thing.
Removed some output
Redefined is_exe to _exe inside of `which()`

cmattoon/today-i-learned,cmattoon/today-i-learned,cmattoon/today-i-learned,cmattoon/today-i-learned,cmattoon/today-i-learned,cmattoon/today-i-learned,cmattoon/today-i-learned