Re: page-at-a-time output for M-x shell

[pjb@informatimago.com (Pascal J. Bourguignon)]

Francis Moreau <francis.moro@gmail.com> writes:

> On 14 juil, 12:55, p...@informatimago.com (Pascal J. Bourguignon)
> wrote:
>> Teemu Likonen <tliko...@iki.fi> writes:
>> > On 2009-07-13 13:42 (-0700), Samuel Wales wrote:
>>
>> >> I read the whole thread, and I am surprised at how thoroughly and
>> >> repeatedly the OP was misunderstood.
>>
>> > Then I'm certainly one of those. Sorry about that, Francis.
>>
>> >> I think what he wants is shell mode (not term) but to have some sort
>> >> of less-like solution (not less itself) for paging output. Page up and
>> >> prompt search and term in line mode are all good ideas, but he
>> >> probably tried them.
>>
>> > Hmm, speaking speculatively, would it be some code in shell.el (or much
>> > likely comint.el) which stores shell commands' output in an intermediate
>> > hidden buffer or some Lisp data type and then pages it to *shell* buffer
>> > for user? I'm pretty sure that that would be possible to implement.
>>
>> Of course.  It is ALREADY implemented.  That data structure is called
>> BUFFER, and the pages are called WINDOWS.  There is a user interface
>> to let the user scan the pages, they're the PgUp and PgDn keys (PAGE
>> UP, PAGE DOWN).
>
> No it's not.
>
> What you propose with PgUp/PgDn is a _workaround_.
>
>>
>> How much silliness must we endure each day???
>>
>> But note however, that M-x term implements an automatic pager in
>> emacs, so you don't even have to remember to type |less : as soon as
>> the output is more than a window-long, the term emacs pager jumps in.  
>>
>
> So why is it silly to implement the 'automatic pager emulation' in
> shell mode and not in 'M-x term' ?

It is clear from the first paragraph of my previous answer, but since
you don't understand (to the point of making this thread sound
trollish), I'll repeat: it is silly to implement the 'automatic pager
emulation' in shell mode, because the  feature is ALREADY IMPLEMENTED
IN THE GUISE of a BUFFER, a WINDOW and PgUp and PgDn to browse the
buffer.  What more do you want?  more or less implement exactly the
same features, they load the file in a buffer, and display a
window-long at a time, and let you advance and (for less) retroced on
the press of a key.  If you don't like the keys PgUp or PgDn, there's
already substitute keys implemented in emacs shell, namely C-v and
M-v, and if you don't like them either, it's trivial to bind other
keys.


-- 
__Pascal Bourguignon__