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acme: revert stray changes

forgot I had local changes when testing, re-revert scrolling.

--- a/sys/src/cmd/acme/acme.c

+++ b/sys/src/cmd/acme/acme.c

@@ -513,13 +513,8 @@

 				but = 2;

 			else if(m.buttons == 4)

 				but = 3;

-			else if(m.buttons == 8)

-				but = 4;

-			else if(m.buttons == 16)

-				but = 5;

 			barttext = t;

-			if(t->what==Body && w != nil

-			&& (ptinrect(m.xy, t->scrollr) || (m.buttons & (8|16)))){

+			if(t->what==Body && ptinrect(m.xy, t->scrollr)){

 				if(but){

 					winlock(w, 'M');

 					t->eq0 = ~0;

@@ -526,6 +521,18 @@

 					textscroll(t, but);

 					winunlock(w);

 				}

+				goto Continue;

+			}

+			/* scroll buttons, wheels, etc. */

+			if(t->what==Body && w != nil && (m.buttons & (8|16))){

+				if(m.buttons & 8)

+					but = Kscrolloneup;

+				else

+					but = Kscrollonedown;

+				winlock(w, 'M');

+				t->eq0 = ~0;

+				texttype(t, but);

+				winunlock(w);

 				goto Continue;

 			}

 			if(ptinrect(m.xy, t->scrollr)){

--- a/sys/src/cmd/acme/scrl.c

+++ b/sys/src/cmd/acme/scrl.c

@@ -132,7 +132,7 @@

 			readmouse(mousectl);

 			continue;

 		}

-		if(but == 1 || but == 4)

+		if(but == 1)

 			p0 = textbacknl(t, t->org, (my-s.min.y)/t->font->height);

 		else

 			p0 = t->org+frcharofpt(t, Pt(s.max.x, my));

@@ -140,7 +140,7 @@

 			textsetorigin(t, p0, TRUE);

 		oldp0 = p0;

 		/* debounce */

-		if(first && but < 4){

+		if(first){

 			flushimage(display, 1);

 			sleep(200);

 			nbrecv(mousectl->c, &mousectl->Mouse);