From 13fcac0589e72c9c9ed43ec09ae514d3895d6bb5 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Wed, 11 May 2022 07:13:21 -0700
Subject: :p command resets any parameters not specified.

---
 pw.1 | 3 ++-
 pw.c | 4 +++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/pw.1 b/pw.1
index 08c4401..21a6d56 100644
--- a/pw.1
+++ b/pw.1
@@ -672,7 +672,8 @@ will have to occur again before the next automatic suspension.
 .IP "\fB:p\fP [\fIinteger\fP[,\fIinteger\fP[,\fIinteger\fP[,\fIinteger\fP[,\fIinteger\fP]]]]]
 Sets the display parameters, exactly in the manner of the
 .B -p
-option.
+option. Any parameters not specified are reset to their default initial values:
+zero in the case of character positions, off in the case of flags.
 
 .IP "\fB:s\fP [\fIfilename\fP]"
 Save a snapshot of the configuration state to the specified file.
diff --git a/pw.c b/pw.c
index 1c77191..674a710 100644
--- a/pw.c
+++ b/pw.c
@@ -683,6 +683,9 @@ static int decodeparms(pwstate *pw, char *parms,
   char *vs2pos = strtok(0, ", \t");
   char *flags = strtok(0, ", \t");
 
+  pw->hpos = pw->vsplit1 = pw->vsplit2 = pw->vs2pos = 0;
+  pw->stat &= ~stat_save;
+
   if (hpos && (pw->hpos = getznn(hpos, &err)) < 0) {
     snprintf(resbuf, size, "bad horizontal scroll offset %s: %s\n", hpos, err);
     return 0;
@@ -709,7 +712,6 @@ static int decodeparms(pwstate *pw, char *parms,
       snprintf(resbuf, size, "bad flags %s: %s\n", flags, err);
       return 0;
     }
-    pw->stat &= ~stat_save;
     pw->stat |= (stat & stat_save);
   }
 
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