From b099753597d2c3b3d150c686df5c16310168477e Mon Sep 17 00:00:00 2001
From: "Roberto E. Vargas Caballero" <k0ga@shike2.com>
Date: Sun, 19 Jan 2020 18:36:50 +0100
Subject: [PATCH 1/2] acme: Restore call to movetodel() in colclose

---
 sys/src/cmd/acme/cols.c | 13 ++++++++++---
 sys/src/cmd/acme/fns.h  |  3 ++-
 sys/src/cmd/acme/util.c | 10 ++++++++--
 3 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/sys/src/cmd/acme/cols.c b/sys/src/cmd/acme/cols.c
index f66634d57..c5c3ee35e 100644
--- a/sys/src/cmd/acme/cols.c
+++ b/sys/src/cmd/acme/cols.c
@@ -112,7 +112,7 @@ void
 colclose(Column *c, Window *w, int dofree)
 {
 	Rectangle r;
-	int i;
+	int i, didmouse, up;
 
 	/* w is locked */
 	if(!c->safe)
@@ -126,7 +126,7 @@ colclose(Column *c, Window *w, int dofree)
 	w->tag.col = nil;
 	w->body.col = nil;
 	w->col = nil;
-	restoremouse(w);
+	didmouse = restoremouse(w);
 	if(dofree){
 		windelete(w);
 		winclose(w);
@@ -138,17 +138,24 @@ colclose(Column *c, Window *w, int dofree)
 		draw(screen, r, display->white, nil, ZP);
 		return;
 	}
+	up = 0;
 	if(i == c->nw){		/* extend last window down */
 		w = c->w[i-1];
 		r.min.y = w->r.min.y;
 		r.max.y = c->r.max.y;
 	}else{			/* extend next window up */
+		up = 1;
 		w = c->w[i];
 		r.max.y = w->r.max.y;
 	}
 	draw(screen, r, textcols[BACK], nil, ZP);
-	if(c->safe)
+	if(c->safe) {
+		if(!didmouse && up)
+			w->showdel = TRUE;
 		winresize(w, r, FALSE);
+		if(!didmouse && up)
+			movetodel(w);
+	}
 }
 
 void
diff --git a/sys/src/cmd/acme/fns.h b/sys/src/cmd/acme/fns.h
index 021799c4b..2a2508087 100644
--- a/sys/src/cmd/acme/fns.h
+++ b/sys/src/cmd/acme/fns.h
@@ -19,10 +19,11 @@ void	undo(Text*, Text*, Text*, int, int, Rune*, int);
 char*	getname(Text*, Text*, Rune*, int, int);
 void	scrsleep(uint);
 void	savemouse(Window*);
-void	restoremouse(Window*);
+int	restoremouse(Window*);
 void	clearmouse(void);
 void	allwindows(void(*)(Window*, void*), void*);
 uint loadfile(int, uint, int*, int(*)(void*, uint, Rune*, int), void*);
+void	movetodel(Window*);
 
 Window*	errorwin(Mntdir*, int);
 Window*	errorwinforwin(Window*);
diff --git a/sys/src/cmd/acme/util.c b/sys/src/cmd/acme/util.c
index bf00a9e65..44f77192e 100644
--- a/sys/src/cmd/acme/util.c
+++ b/sys/src/cmd/acme/util.c
@@ -367,12 +367,18 @@ savemouse(Window *w)
 	mousew = w;
 }
 
-void
+int
 restoremouse(Window *w)
 {
-	if(mousew!=nil && mousew==w)
+	int did;
+
+	did = 0;
+	if(mousew!=nil && mousew==w) {
 		moveto(mousectl, prevmouse);
+		did = 1;
+	}
 	mousew = nil;
+	return did;
 }
 
 void

From 47bae09b33f677b9e1f5b45190ec5216f5d988e0 Mon Sep 17 00:00:00 2001
From: "Roberto E. Vargas Caballero" <k0ga@shike2.com>
Date: Sun, 19 Jan 2020 19:18:12 +0100
Subject: [PATCH 2/2] Apply
 http://www.9paste.net/qrstuv/patch/acme-movetodelmesg/

---
 sys/src/cmd/acme/dat.h  |  1 +
 sys/src/cmd/acme/exec.c |  2 ++
 sys/src/cmd/acme/wind.c | 31 ++++++++++++++++++-------------
 3 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/sys/src/cmd/acme/dat.h b/sys/src/cmd/acme/dat.h
index bfc16e913..5daf89e04 100644
--- a/sys/src/cmd/acme/dat.h
+++ b/sys/src/cmd/acme/dat.h
@@ -546,6 +546,7 @@ char			wdir[];
 int			editing;
 int			messagesize;		/* negotiated in 9P version setup */
 int			globalindent[NINDENT];
+Rune		*delcmd;			/* what command deleted the window. eg, Del, Delete, Delmesg */
 
 Channel	*cplumb;		/* chan(Plumbmsg*) */
 Channel	*cwait;		/* chan(Waitmsg) */
diff --git a/sys/src/cmd/acme/exec.c b/sys/src/cmd/acme/exec.c
index 3dbd001c5..a975f56c9 100644
--- a/sys/src/cmd/acme/exec.c
+++ b/sys/src/cmd/acme/exec.c
@@ -147,6 +147,8 @@ execute(Text *t, uint aq0, uint aq1, int external, Text *argt)
 	}
 	r = runemalloc(q1-q0);
 	bufread(t->file, q0, r, q1-q0);
+	free(delcmd);
+	delcmd = runesmprint("%.*S", q1-q0, r);
 	e = lookup(r, q1-q0);
 	if(!external && t->w!=nil && t->w->nopen[QWevent]>0){
 		f = 0;
diff --git a/sys/src/cmd/acme/wind.c b/sys/src/cmd/acme/wind.c
index 7c222a17c..a624f50d3 100644
--- a/sys/src/cmd/acme/wind.c
+++ b/sys/src/cmd/acme/wind.c
@@ -90,20 +90,23 @@ wininit(Window *w, Window *clone, Rectangle r)
 }
 
 int
-delrunepos(Window *w)
+tagrunepos(Window *w, Rune *s)
 {
 	int n;
-	Rune rune;
-	
-	for(n=0; n<w->tag.file->nc; n++) {
-		bufread(w->tag.file, n, &rune, 1);
-		if(rune == ' ')
-			break;
-	}
-	n += 2;
-	if(n >= w->tag.file->nc)
+	Rune *r, *rr;
+
+	if(s == nil)
 		return -1;
-	return n;
+
+	n = w->tag.file->nc;
+	r = runemalloc(n+1);
+	bufread(w->tag.file, 0, r, n);
+	r[n] = L'\0';
+
+	rr = runestrstr(r, s);
+	if(rr == nil || rr == r)
+		return -1;
+	return rr - r;
 }
 
 void
@@ -111,7 +114,9 @@ movetodel(Window *w)
 {
 	int n;
 	
-	n = delrunepos(w);
+	n = tagrunepos(w, delcmd);
+	free(delcmd);
+	delcmd = nil;
 	if(n < 0)
 		return;
 	moveto(mousectl, addpt(frptofchar(&w->tag, n), Pt(4, w->tag.font->height-4)));
@@ -138,7 +143,7 @@ wintaglines(Window *w, Rectangle r)
 	
 	if(!w->tagexpand) {
 		/* use just as many lines as needed to show the Del */
-		n = delrunepos(w);
+		n = tagrunepos(w, delcmd);
 		if(n < 0)
 			return 1;
 		p = subpt(frptofchar(&w->tag, n), w->tag.r.min);