Re: Bug with the new prompt redraw code

[Peter Stephenson <pws@csr.com>]

Bart Schaefer wrote:
> On Sun, 11 Jul 2004, Peter Stephenson wrote:
> 
> > > > > (1) zle-line-init runs before the prompt is displayed
> 
> So, what about (1)?  To repeat, the intent was to display a multi-line 
> prompt immediately after a command finishes, but then refresh only the 
> last line of that prompt on subsequent zle redisplays (the original 
> example involved SIGWINCH handling).
> 
> An almost-equivalent thing can be achieved by using "print -P" from the
> precmd function instead of by assignment to PS1, but there's a question
> of whether other commands in zle-line-init should affect values that are
> substituted into the prompt (e.g. $psvar).

It sounds like zrefresh() should be moved earlier, out of zlecore().

This means zle-line-init is basically the last thing executed before the
editor starts looking for input.  Hence zle-line-init will only affect
the next prompt, but the previous prompt will have been drawn.

Maybe that's right.

Index: Src/Zle/zle_main.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/Zle/zle_main.c,v
retrieving revision 1.48
diff -u -r1.48 zle_main.c
--- Src/Zle/zle_main.c	11 Jul 2004 22:53:04 -0000	1.48
+++ Src/Zle/zle_main.c	12 Jul 2004 17:48:57 -0000
@@ -680,8 +680,6 @@
     FD_ZERO(&foofd);
 #endif
 
-    zrefresh();
-
     while (!done && !errflag) {
 
 	statusline = NULL;
@@ -834,6 +832,8 @@
     initmodifier(&zmod);
     prefixflag = 0;
 
+    zrefresh();
+
     if ((initthingy = rthingy_nocreate("zle-line-init"))) {
 	char *args[2];
 	args[0] = initthingy->nam;
@@ -1303,6 +1303,7 @@
 {
     int locerror;
 
+    zrefresh();
     zlecore();
 
     locerror = errflag;

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR Ltd., Science Park, Milton Road,
Cambridge, CB4 0WH, UK                          Tel: +44 (0)1223 692070


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