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"Mauro Iazzi" <> wrote:

> The backslash is still considered escape at string constructor level.
> It is discarded before it arrives to gsub. Then gsub does not even
> know it was there and interprets the ^ as negating next char (it needs
> at least one). Anytime you want a backslash in a string just insert it
> twice.

Ah, indeed.  I should once more read the manual from the beginning...

Regards, Frank

Frank Küster
Single Molecule Spectroscopy, Protein Folding @ Inst. f. Biochemie, Univ. Zürich
Debian Developer (teTeX/TeXLive)