I have a data.frame named all that has a column of factors, these factors include "word","nonword" and some others. My goal is to select only the rows that have the factor value "word". My ...

Regular expression engines have a concept of "zero width" matches, some of which are useful for finding edges of words: \b - present in most engines to match any boundary between word and non-wor...

In JavaScript: "ab abc cab ab ab".replace(/\bab\b/g, "AB"); correctly gives me: "AB abc cab AB AB" When I use utf-8 characters though: "αβ αβγ γαβ αβ αβ".replace(/\bαβ\b/g, "AB"); the word...

I was using the standard \b word boundary. However, it doesn't quite deal with the dot (.) character the way I want it to. So the following regex: \b(\w+)\b will match cats and dogs in cats.dog ...

I know most regular expression engines, including the one in JavaScript have \b to match a word boundary, be it at either the start or end of a word. But Vim also has two more specific regular exp...

A colleague asked me about a Regular expression problem, and I can't seem to find and answer for him. We're using boundaries to highlight certain lengths of text in a text editor, but here's some ...

I'm getting unexpected results with this code: 'foo'.match(new RegExp('\bfoo\b')); // Returns null Why is this returning null while this one returns "foo"? 'foo'.match(new RegExp('foo')); // Re...

I am working on a solution to split long lines of Khmer (the Cambodian language) into individual words (in UTF-8). Khmer does not use spaces between words. There are a few solutions out there, but ...

I have a JavaScript regular expression which basically finds two-letter words. The problem seems to be that it interprets accented characters as word boundaries. Indeed, it seems that A word bou...

i want to check if a string contains a field value as a substring or not. select * from mytable where instr("mystring", column_name); but this does not search on word boundaries. select * from m...

I'm wanting to match a list of words which is easy enough when those words are truly words. For example /\b (pop|push) \b/gsx when ran against the string pop gave the door a push but it popped b...