bug#5570: Emacs 23.1.91.1 C++ mode "ESC C-q" and TAB indenting issue.

[Bob]

As I work with text in C++ mode the indentation begins to deteriorate. For example, TAB on the class line wrongly indents it:

 

    template<class _Enum>

      class Build<TL::End,_Enum>

 

I work-around the problem by writing the buffer, killing the buffer, then visiting the file and re-indenting with TAB on the class line to get the expected indentation:

 

    template<class _Enum>

    class Build<TL::End,_Enum>

 

Same thing happens with ESC C-q.

 

My impression is there is internal state which doesn't get cleared as I work the text toward a syntax correct unit, causing incorrect indentation.  The bad state is ultimately cleared by re-visiting the file.

 

Sorry I can't come up with something reproducible.  

 

Has anyone else seen this issue?