Author: Dany St-Amant <dany.ephemeral.2014@icloud.com>
Description: SYSAPPEND: Fix space stripping
 The description of SYSAPPEND for the DMI information states that the spaces
 are replaced by underscores, but this replacement does not occur in 6.03 (Closes: #795596).

diff -Naurp syslinux.orig/com32/elflink/ldlinux/readconfig.c syslinux/com32/elflink/ldlinux/readconfig.c
--- syslinux.orig/com32/elflink/ldlinux/readconfig.c
+++ syslinux/com32/elflink/ldlinux/readconfig.c
@@ -330,7 +330,7 @@ static char *copy_sysappend_string(char
     char c;
 
     while ((c = *src++)) {
-	if (c <= ' ' && c == '\x7f') {
+	if (c <= ' ' || c == '\x7f') {
 	    if (!was_space)
 		*dst++ = '_';
 	    was_space = true;
diff -Naurp syslinux.orig/com32/menu/readconfig.c syslinux/com32/menu/readconfig.c
--- syslinux.orig/com32/menu/readconfig.c
+++ syslinux/com32/menu/readconfig.c
@@ -299,7 +299,7 @@ static char *copy_sysappend_string(char
     char c;
 
     while ((c = *src++)) {
-	if (c <= ' ' && c == '\x7f') {
+	if (c <= ' ' || c == '\x7f') {
 	    if (!was_space)
 		*dst++ = '_';
 	    was_space = true;
diff -Naurp syslinux.orig/core/sysappend.c syslinux/core/sysappend.c
--- syslinux.orig/core/sysappend.c
+++ syslinux/core/sysappend.c
@@ -35,7 +35,7 @@ static char *copy_and_mangle(char *dst,
     char c;
 
     while ((c = *src++)) {
-	if (c <= ' ' && c == '\x7f') {
+	if (c <= ' ' || c == '\x7f') {
 	    if (!was_space)
 		*dst++ = '_';
 	    was_space = true;

.