Dear perl monks---

is it possible to define the characters that '\b' matches? I am processing latex code, and their macro character space is \ a-zA-Z \. I would like to write

   \\$keyword\b

where $keyword may hold, say, "Chi". The problem is that if my latex code says "\\Chi_2", perl thinks that the '_' is a word character. same problem for "\\sqrt22".

Alternatively, is there a way to have a "zero width" match like boundary? It would be tedious to have to write \\$keyword([^a-zA-Z]) and then have to substitute back $1 (because I do not want it eaten).

advice appreciated. /iaw

In reply to Defining Characters in Word Boundary? by iaw4

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