问题
Do you know how to look for special characters with google...?
I'm looking at bash code and there's the ## operator. I would like to know what It does but I wasn't able to figure out a way to protect the character (I'm not sure it's even possible).
This is particularly annoying when you're looking for some code patterns, some characters are always ignored.
回答1:
Google strips most punctuation from queries, as described here, so it won't help you with the bash syntax.
It's very easy to search for the string "##" in the bash documentation: Just run "info bash", hit "s", and enter "##" as the search string.
回答2:
google strips puntuation, imho, because:
- it's somewhere used for special search (chars like - to exclude, +to add and 10..20 to specify a range)
- to avoid spammers to get email addresses (characters like @ or .) in my experience, it's even impossible to escape special characters. the only solution I found, by now, is using yahoo http://it.search.yahoo.com/
来源：https://stackoverflow.com/questions/842478/looking-for-special-characters-in-google