Changeset 1617 for trunk/src/kmk/expand.c

Timestamp:

May 12, 2008, 7:07:26 PM (17 years ago)

Author:

bird

Message:

Don't append empty strings to variables. (foo +=)

File:

• trunk/src/kmk/expand.c (modified) (2 diffs)

trunk/src/kmk/expand.c

@@ -616 +616 @@
     /* fast path */
     append_string_to_variable (v,value, value_len, append);
-  else
+  else if (value_len)
     {
       unsigned int off_dollar = p - (char *)value;
@@ -662 +662 @@
       restore_variable_buffer (saved_buffer, saved_buffer_length);
     }
+  /* else: Drop empty strings. Use $(NO_SUCH_VARIABLE) if a space is wanted. */
 }
 #endif /* CONFIG_WITH_VALUE_LENGTH */