[PATCH 4/7] fast-export: Do parent rewriting to avoid dropping relevant commits

[newren@gmail.com]

From: Elijah Newren <newren@gmail.com>

When specifying paths to export, parent rewriting must be turned on for
fast-export to output anything at all.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
Try 'git fast-export master -- COPYING' in git.git and notice how there
is no output at all (whereas 'git rev-list master -- COPYING' does show
some existing revisions).  This simple patch restores the missing file
and commit in the fast-export output.

 builtin-fast-export.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/builtin-fast-export.c b/builtin-fast-export.c
index 9aa409b..b60a97e 100644
--- a/builtin-fast-export.c
+++ b/builtin-fast-export.c
@@ -532,6 +532,7 @@ int cmd_fast_export(int argc, const char **argv, const char *prefix)
 
 	revs.topo_order = 1;
 	revs.show_source = 1;
+	revs.rewrite_parents = 1;
 	if (prepare_revision_walk(&revs))
 		die("revision walk setup failed");
 	revs.diffopt.format_callback = show_filemodify;
-- 
1.6.3.2.323.gfb84f