Re: [AUCTeX] Extra braces in math mode

[Yevgeniy Makarov]

Hi,

This is a follow-up to the question which was asked in March this year. 
The issue was that in math mode, AUCTeX inserts some symbols with extra 
pair of braces if it thinks that the cursor is not in math scope (i.e., 
not between $...$ or \[...\]). For example, `l insert \lambda{} instead 
of just \lambda.

I am wondering if there is ever a reason for inserting the braces 
following TeX math mode commands with no arguments. How does it help 
that in text mode \lambda is followed by braces? It is not allowed in 
text mode anyway.

On the other hand, there are some TeX commands from lesser-known 
packages which start math mode themselves (i.e., they don't require $ or 
\[ ). For example, the author of proof.sty recommends using 
\vcenter{\infer{...}{...}} for entering vertically centered deductions. 
If I remember right, Paul Taylor in his diagrams package does not 
recommend enclosing \begin{diagram}...\end{diagram} in display math. In 
such cases, I presume, AUCTeX would consider it a text mode and insert 
superfluous braces.

Yevgeniy