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 Re: Something like \patchcmd Joseph Wright <[log in to unmask]> Wed, 10 Sep 2008 22:37:54 +0100 text/plain (49 lines) Frank Mittelbach wrote: > Joseph, > > > I've been trying to work out if the current expl3 has anything like > > \patchcmd from etoolbox. > > the current expl3 doesn't have something comparible to \patchcmd, not on that > level of complexity / generality > > > > Will suggested looking at the various \tlp_ > > ... macros. However, even a simple two-part test in this way fails: > > > > \documentclass{article} > > \usepackage{expl3} > > \CodeStart > > \cs_if_really_exist:cT{thanks}{ > > \tlp_if_in:NnT\thanks{\footnotemark}{ > > % Do something > > } > > \tlp_if_in:NnT\thanks{\footnotetext}{ > > % Also do something > > } > > } > > \CodeStop > > \begin{document} > > \end{document} > > > > I guess I'm abusing the functions. So have I missed something obvious? > > well, one thing obvious is \thanks is not a "tlp" variable is it? No. The original context of the suggestion was that I couldn't see a replacement for \g@addto@macro (I may of course have missed it). Here, using one of the \tlp_put functions does work. So I was extrapolating! I'm guessing that something like \g@addto@macro will be needed, in the end.  > The \patchcmd does detokenization (loosing catcodes) and then rebuilds the > code using "current" catcodes, so it is kind of dangerous in situations At least in the context I was thinking of, this would not be an issue. I'd imagine that stuff with funny catcodes wouldn't typically be where a simple find-and-replace would apply. I'll stick with redefining \thanks for the moment, then. -- Joseph Wright