Some people use the archaic spelling "shew" but only the senses "to prove or demonstrate". Or again in mathematics "rng" to mean a ring that does not necessarily have an identity. Or "iff" to mean "if and only if". These would look like inconsistent typos to nonmathematicians.

Or "referer" in HTTP because that's what the standard uses. Or "creat" when discussing the UNIX system call or a function with the same purpose on another platform.

I’ve also worked on codebases where the first developer misspelled a function’s name and everyone else just kept using it instead of fixing it. When I see stuff like that, I admit that I judge them probably harsher than they deserve. Sloppy!

Ahhh Raymond Chen. For anyone who hasn't read his work before, it's an absolute goldmine of interesting quirks and "why things are the way they are".

To the point of the article, I try really hard to make sure that things like this don't happen, ideally before a typo like that gets merged.