Patch from Debian's minicom_2.2-5.diff.gz:
minicom-2.2/debian/patches/bug199924.diff
--- minicom-2.2.orig/src/util.c	2005-11-09 00:34:25.000000000 +0100
+++ minicom-2.2/src/util.c	2006-10-19 17:38:18.000000000 +0200
@@ -116,7 +116,7 @@
 
   /* Delete escape-characters ment for the shell */
   p = cmd;
-  while ((p = strchr(p, '\\')))
+  while ((p = strchr(p, '\\')) && *(p+1) != ' ')
     memmove(p, p + 1, strlen(p+1));
 
   /* Split line into words */
--- minicom-2.2.orig/src/file.c	2005-08-14 22:39:30.000000000 +0200
+++ minicom-2.2/src/file.c	2006-10-19 17:43:10.000000000 +0200
@@ -529,6 +529,8 @@
 {
   GETSDIR_ENTRY *my_d;
   int indxr, len;
+  int i;
+  char *j;
 
   my_d = d;
   for (indxr = nrents, len = 0; indxr; --indxr, ++my_d)
@@ -548,8 +550,18 @@
     for (indxr = nrents; indxr; --indxr, ++my_d)
       if (my_d->cflags & FL_TAG) {
         /* this could be *much* more efficient */
-        strcat(ret_buf, my_d->fname);
-        strcat(ret_buf, " ");
+        for (i = strlen(ret_buf), j = my_d->fname; *j; j++) {
+          if (*j == ' ') {
+            if ((ret_buf = (char*)realloc(ret_buf, ++len)) == NULL) {
+              file_tell(_("Too many files tagged - buffer would overflow"));
+              return(NULL);
+            }
+            ret_buf[i++] = '\\';
+          }
+          ret_buf[i++] = *j;
+        }
+        ret_buf[i++] = ' ';
+        ret_buf[i]   = '\0';
       }
 
     ret_buf[strlen(ret_buf) - 1] = (char)0;