bug#25447: 11.90.0; alltt environment should allow being extended in wrapper

[Mosè Giordano]

Hi Jean-François,

2017-01-14 11:41 GMT+01:00 jfbu <address@hidden>:
> Hi,
>
> \newenvironment{myalltt}
> {\begin{alltt}%
>    \IamAllowedToDefineWrapperOfAllTT
>    \ButFontificationByAucTeXIsProblematic
>   }
> {\end{alltt}}
>
> causes fontification problem. I can use \alltt and \endalltt
> but this forces me to change TeX code for this issue.
>
> (alltt is not implemented like standard verbatim, the latter
> would indeed not allow the above kind of redefinition)

This is not limited to "alltt" but to any verbatim-like environment.
Possible workaround

--8<---------------cut here---------------start------------->8---
\newenvironment{myalltt}
{%
\begin{alltt}%
  ...
  }
{\end{alltt}}
--8<---------------cut here---------------end--------------->8---

Bye,
Mosè