Comment by vthriller

> They look similar to one another, which telegraphs that they're part of the same set of list access tools.

…and probably allows for more typos and misreads during code review or something else. Luckily 'a' is distinct enough from 'd' visually so the difference between them is more noticable; imagine functions ending up with unfortunate names like cbr/cdr or car/cer…