Fix for PR# 1095, make's continuation line handling buggy

when used with .elif.  Additional fixes include:

    - fix continuation line handling when using .for
    - plug up a memory leak

1 files changed, 25 insertions, 0 deletions

diff --git a/usr.bin/make/buf.c b/usr.bin/make/buf.c
index a4ecaf6..68315e7 100644
--- a/usr.bin/make/buf.c
+++ b/usr.bin/make/buf.c
@@ -434,3 +434,28 @@ Buf_Destroy (buf, freeData)
     }
     free ((char *)buf);
 }
+
+/*-
+ *-----------------------------------------------------------------------
+ * Buf_ReplaceLastByte --
+ *     Replace the last byte in a buffer.
+ *
+ * Results:
+ *     None.
+ *
+ * Side Effects:
+ *     If the buffer was empty intially, then a new byte will be added.
+ *     Otherwise, the last byte is overwritten.
+ *
+ *-----------------------------------------------------------------------
+ */
+void
+Buf_ReplaceLastByte (buf, byte)
+    Buffer buf;	/* buffer to augment */
+    Byte byte;	/* byte to be written */
+{
+    if (buf->inPtr == buf->outPtr)
+        Buf_AddByte(buf, byte);
+    else
+        *(buf->inPtr - 1) = byte;
+}