Re: jed eats memory

["John E. Davis" <davis@xxxxxxxxxxxxx>]

=?UTF-8?Q?J=C3=B6rg?= Sommer <joerg@xxxxxxxxxxxx> wrote:
>Yes, but it needs 30 seconds to change the whole file. Is this realistic
>or can it be better? sed does the job in 2 seconds.

For extremely long lines, a forward replace algorithm such as the one
implemented by "replace" is very inefficient.  In contrast, an
algorithm that uses a backward search will be much faster.  Here is
such a function that should perform significantly faster in this
particular case:

define replace_backward ()
{
   eob ();
   while (bsearch ("\r"))
     {
	newline ();
	del();
	go_up(1);
     }
}

I will look into adding a special case to the replace function to
handle operations that involve newline characters.

--John

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