[PATCH] Don't allow newlines to occur in $Id:$ collapse

If a newline ever made it into an repository-side expanded $Id$ field,
the keyword would still be detected as a keyword and collapsed, before
rexpansion, e.g.

 $Id: all of this text would be removed, even if there
 were a newline in the middle of it$

This patch catches newlines in this case and abandons treating this as a
keyword expansion, this text would be left untouched in the working
checkout.

Signed-off-by: Andy Parkins <redacted>
---
 convert.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/convert.c b/convert.c
index 3c44e3d..051366c 100644
--- a/convert.c
+++ b/convert.c

@@ -547,12 +547,14 @@ static char *ident_to_worktree(const char *path, const char *src, unsigned long
 				ch = *cp;
 				if (ch == '$')
 					break;
+				if (ch == '\n')
+					break;
 				cp++;
 				rem--;
 			} while (rem);
 			/* If the above finished because it ran out of characters, then
 			 * this is an incomplete keyword, so don't run the expansion */
-			if (!rem)
+			if (!rem || ch == '\n')
 				continue;
 		} else if (src[2] == '$')
 			cp = src + 2;

-- 
1.5.2.763.g8c5e-dirty