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 Let’s say I grabbed some string from a log window in an application of mine. I want to display a popup menu offering some actions if this string contains a file name. Even better, since I got this string because the user clicked it, I want to offer the actions if the clicked *word* inside that string represents an existing file.


So, I want to extract the word in this string whose limits surround the position clicked by the user. Is there some efficient way of searching for the beginning and end of a word around a given position that doesn’t involve reversing the string or capturing all words until I find one whose limits enclose the initial position?


What I am currently doing is even more brutal than that: I know that I look for a file path. So I iterate over all words, and check for each of them if the file exists. If true, I found a file and I can act on it J. But there is surely a better way…