Separate out the string parsing for .include/.library file names and macro arguments.

They behave observably different from generic string parsing and trying
to account for them generically just gets in the way.
.rept is treated the same as a macro.

parse.c

@@ -77,6 +77,49 @@ char           *getstring(
     return str;
 }
 
+/* Parses a string from the input stream for .include and .library.
+ * These have a special kind of delimiters. It likes
+ * .include /name/ ?name? \name\ "name"
+ * but not
+ * .include ^/name/ <name> name =name= :name:
+ * .include :name: seems to be silently ignored.
+ */
+char           *getstring_fn(
+    char *cp,
+    char **endp)
+{
+    char            endstr[4];
+    int             len;
+    char           *str;
+
+    switch (*cp) {
+    case '<':
+    case '=':
+    case ':':
+        return NULL;
+    }
+
+    if (!ispunct(*cp)) {
+        return NULL;
+    }
+
+    endstr[0] = *cp;
+    endstr[1] = '\n';
+    endstr[2] = '\0';
+    cp++;
+
+    len = strcspn(cp, endstr);
+
+    if (endp)
+        *endp = cp + len + 1;
+
+    str = memcheck(malloc(len + 1));
+    memcpy(str, cp, len);
+    str[len] = 0;
+
+    return str;
+}
+
 /* Get what would be the operation code from the line.  */
 /* Used to find the ends of streams without evaluating them, like
    finding the closing .ENDM on a macro definition */
@@ -584,15 +627,6 @@ int brackrange(
         endlen = 1;
         *start = 1;
         break;
-    case '/':   /* seen on page 6-52 */
-    case '?':   /* seen on page 6-52 */
-    case '\\':  /* seen on page 6-52 */
-    case '"':   /* seen in Kermit-11 source for RT11 */
-        endstr[0] = cp[0];
-        strcpy(endstr + 1, "\n");
-        *start = 1;
-        endlen = 1;
-        break;
     default:
         return FALSE;
     }