You should be putting punctuation inside the quote when it ends a sentence.
Single quotes, not double quotes, should be used in your comment since you are not completely and directly quoting your source.
You should not be capitalising the first letter of a quote when it occurs after the beginning of a sentence.
These are just some of the grammatical errors you've made in two paragraphs. I've probably made some too. It's pointless to discuss these things outside academic contexts as long as the text can still be understood.
Those are typographic eccentricities, to be pedant :)
And they're not even that uncommon on the Internet and amongst tech people. (See the Jargon file[1], for example.)
But I get your point: pedantry is often needless, and sometimes even lacks proper justification (see taejo's comment). But it's difficult to stop seeing errors when you see them, so I would forgive the parent for being that Hacker News guy.
It's something poor students/learners do. You spend all your time looking for minor errors in instruction or text so you can 'win' while missing the actual lesson or overarching idea. I am definitely not innocent of this as a former high school dropout lol. Cheers.
I gratefully accept the information of your post, but I don't think it manages to make the intended point. Notice how many times you used the word "should", which was never a consideration in my post.
We could talk about should. As a starting point, it would seem to me most useful to preserve meaningful distinctions which convey information, and otherwise make language as fluid and relaxed as possible. But I'm not expert.
That’s not grammar, it’s style and convention. And the convention is not the same across all english-speaking countries. Parent comment’s punctuation is “correct” by British standards, for example.
I was taught in elementary school (in the US) that punctuation inside the quotes is correct usage in the UK. It was good of them to note when we were so young that the rules we were being taught were not universal and that we shouldn't freak out if we encounter a text using different rules.
Single quotes, not double quotes, should be used in your comment since you are not completely and directly quoting your source.
You should not be capitalising the first letter of a quote when it occurs after the beginning of a sentence.
These are just some of the grammatical errors you've made in two paragraphs. I've probably made some too. It's pointless to discuss these things outside academic contexts as long as the text can still be understood.