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From: rms@prep
Newsgroups: net.emacs
Subject: termcap
Message-ID: <427@mit-eddie.UUCP>
Date: Thu, 14-Nov-85 01:53:52 EST
Article-I.D.: mit-eddi.427
Posted: Thu Nov 14 01:53:52 1985
Date-Received: Fri, 15-Nov-85 05:22:48 EST
Sender: daemon@mit-eddi.UUCP
Organization: MIT, Cambridge, MA
Lines: 24

From: rms@prep (Richard M. Stallman)
I have discovered the cause of the confusions about the
`cs' scroll region command.

Emacs has been handling %i incorrectly.  Its documentation
	%i	increment by one, no output
did not tell me it should increment two arguments.
Cursor motion was handled by old code I got from chris@maryland
so it worked correctly.

I designed the arguments to the `cs' string to make the
VT100 termcap entry do the correct thing with %i working wrong.

The fix to this is:

In tparam.c, in function tparam, add the line
     argp[1] ++;
just after the line
    case 'i':

In term.c, in set_scroll_region, change the line
      tparam (TS_set_scroll_region, buf, start, stop);
to
      tparam (TS_set_scroll_region, buf, start, stop - 1);