# [NTG-context] ASCII mode within \footnote

Sat Nov 2 16:35:46 CET 2019

On Sat, 2 Nov 2019, context at vivaldi.net wrote:

> Hello,
>
> OK, thanks for reaction.
>
> One more example - \text instead of ascii mode:
>
> ----
> \starttext
>   \type{%@$} > A\footnote{\type{*\$%
>   }}
>   B\footnote{\type{*\$\% > }} > \stoptext > ---- > > gives: > > " > *\$
> *\$\% > " > > in the footnote. > > IOW, I cannot simply print "%": "%" at the end yields "" whilst "\%" > produces "\%". > > Is there a simple way to prinst simple "%"? > (There is probably a more clumsy way - type \letterpercent instead of % > - but this is a minimal sample; in my real sample there are many "%"s to > be shown as "%".) Why not just use asciimode? To understand why \footnote{\type{...}}} doesn't work, you need to understand TeX's "digestive system". \type{...} (and asciimode) work by modifying the catcode tables. However, they are are used inside a footnote, the argument of \footnote is parsed according to the catcode table which is active when footnote is passed. Under the default catcode table, % is a comment, so when you type: \footnote{\type{*\$%
}}

the argument of \footnote is \type{*\\$}

So, if you want \footnote to "see" the %, you need to activate a catcode
table where % is a letter. So, the simplest solution is to use \asciimode.