Re: [Groff] Formatting algorithm

[Keith Marshall]

On 23/04/14 22:42, (Ted Harding) wrote:
> I think some confusion is possibly arising here. See in-line below.
> 
> On 23-Apr-2014 20:45:10 Keith Marshall wrote:
>> Doesn't a paragraph logically conclude at any request which introduces a
>> break?  Or invocation of any macro which itself invokes such a request?
>>  (In addition to an empty input line, or one with leading white space,
>> which implies a break?)  All of these exhibit one common feature: the
>> introduction of the break.
> 
> I think I have to disagree here.

Then, I think we must respectfully agree to disagree.  However...

> For example, in the middle of a paragraph I may wish to put some text
> centred on lines by itself, and this may be in the middle of a
> sentence -- perhaps a parenthetical quotation. Or, in technical
> writing, a displayed equation in the middle of a sentence.
> 
> Such things certainly induce a line-break (indeed two) but they can 
> hardly constitute a separate paragraph (unless one's concept of 
> "paragraph" allows the same sentence to continue through two or more 
> "paragraphs"). So I don't agree with Keith that "the introduction of 
> the break" denotea a new paragraph. A line-break is necessary, but 
> not sufficient, for the end of a paragraph.

... I strongly suspect that you are confusing the distinct concepts of
the "logical paragraph" from the grammatical perspective of the human
reader, and from the technical perspective of the layout engine; the
latter neither comprehends the grammatical concept, nor does it require
any such comprehension.

-- 
Regards,
Keith.