Re: [Bug-AUCTeX] Re: Filling paragraphs with double dollar displayed math

[Ralf Angeli]

* Rodolfo Medina (2008-11-14) writes:

> Rodolfo Medina (2008-11-13) writes:
>
>>> The problem only occurs when the displayed equation is two or more lines
>>> long, and only for the text succeding the equation, not for the preceding
>>> text.  So:
>
>>> bla bla bla
>>> $$ long equation
>>> = over two lines$$
>>> bla bla <M-q>
>>> bla
>>>
>>> becomes:
>>>
>>> bla bla bla
>>> $$ long equation
>>> = over two lines$$ bla bla bla
>
>
>
> Ralf Angeli <address@hidden> writes:
>
>> This is not easy to fix.  How about writing it like this?
>>
>> bla bla bla
>> $$
>> long equation
>> = over two lines
>> $$
>> bla bla
>> bla
>
>
> Thanks for the suggestion.  But why is it so hard?  After all, the problem 
> does
> not exist for the text preceding the equation.

In case of the preceding text it is easy to find the paragraph boundary
because there is a line starting with $$.  Determination of paragraph
starts or separators usually works by looking at the start of a line.
In AUCTeX there is also code that looks at the end of a line, but this
is only used in LaTeX mode.  Plain TeX mode relies on Emacs facilities
for filling.

-- 
Ralf