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 Re: Fully expandable "x" argument (was "expandable \uppercase...") Joseph Wright <[log in to unmask]> Mon, 21 Feb 2011 11:48:01 +0000 text/plain (14 lines) On 21/02/2011 11:20, Bruno Le Floch wrote: >> (I haven't looked into doing it non-expandably, which would be more robust.) > > My claim is that expandable is just as robust as non-expandable if > - we have access to the full argument (i.e. no peeking ahead) > - there is no token of catcode 1 other than a true "{" > - there is no token of catcode 10 and character code other than 32 (space). I suspect condition (2) is killer. While assuming "{" is catcode 1 is fine for LaTeX-like input, what happens if you're using LaTeX3 with some other input syntax (for example XML)? -- Joseph Wright