> ...we started dwelving into the code base...
The author may not be a native speaker, but this is far from a judgement on their English. I'm just curious about the provenance of this mistake, given the scarcity of words that begin with "dw". At first I thought it was a typo -- especially on a QWERTY keyboard -- but I've seen it often enough to question this.
Because of English pronunciation (pronounciation? :-P). English is extremely irregular, there are a thousand of footguns in the language - both spoken and written -, so as non-native speakers we tend to make small mistakes that stick to our brains like glue, and it's very hard to get rid of (rid off? :-P).
For me it kinda makes sense to say "dwelve" because it reminds me of "dwarfs" (dwarves? :-P) that live underground!
Another comment, added years later, admits the same confusion.
My particular pet peeve is using "weary" instead of "wary" or "leery". I've started to hear it spoke in youtube videos now, too, so it's not just a typo.