commit 3197719090b3fd0a038767f7e8e15e771b1515be
from: Russ Cox <rsc@swtch.com>
date: Sat Apr 20 02:24:53 2019 UTC

acme: do not trim spaces during Put

The commit that introduced this was pushed accidentally.
It is not a good idea to do this.
(It breaks programs that think that a clean window
means the body matches the on-disk file.)

commit - 9179fdaaf4fb5748832b2162d35a515133bad0f5
commit + 3197719090b3fd0a038767f7e8e15e771b1515be
blob - 0fc6c16b4e33aabe25b80028cd30cbe807d279a9
blob + b3bb0ac378b298573b5b1754a4089fea3fe81384
--- src/cmd/acme/exec.c
+++ src/cmd/acme/exec.c
@@ -192,7 +192,7 @@ execute(Text *t, uint aq0, uint aq1, int external, Tex
 			f |= 2;
 		}
 		aa = getbytearg(argt, TRUE, TRUE, &a);
-		if(a){	
+		if(a){
 			if(strlen(a) > EVENTSIZE){	/* too big; too bad */
 				free(r);
 				free(aa);
@@ -674,7 +674,7 @@ checksha1(char *name, File *f, Dir *d)
 	DigestState *h;
 	uchar out[20];
 	uchar *buf;
-	
+
 	fd = open(name, OREAD);
 	if(fd < 0)
 		return;
@@ -700,7 +700,7 @@ trimspaces(Rune *r, uint *np, int eof)
 
 	nonspace = 0;
 	w = 0;
-	n = *np;	
+	n = *np;
 	for(i=0; i<n; i++) {
 		c = r[i];
 		if(c == '\n')
@@ -783,7 +783,11 @@ putfile(File *f, int q0, int q1, Rune *namer, int nnam
 			n = BUFSIZE/UTFmax;
 		bufread(&f->b, q, r, n);
 		nn = n;
-		if(w->autoindent)
+		// An attempt at automatically trimming trailing spaces.
+		// Breaks programs that inspect body file and think it will match on-disk file
+		// when window is clean. Should apply the changes to the actual window instead.
+		// Later.
+		if(0 && w->autoindent)
 			nn = trimspaces(r, &n, q+n==q1);
 		m = snprint(s, BUFSIZE+1, "%.*S", nn, r);
 		sha1((uchar*)s, m, nil, h);