Fix section about backdating tags in the git-tag docs

diff --git a/environment.c b/environment.c
index 9556009324c5945d4212be9155076f7f8b8adfbe..fa3633372b8249899ff1e57a2f1431de029b211d 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -33,7 +33,7 @@ size_t delta_base_cache_limit = 16 * 1024 * 1024;
 const char *pager_program;
 int pager_use_color = 1;
 const char *editor_program;
-char *excludes_file;
+const char *excludes_file;
 int auto_crlf = 0;     /* 1: both ways, -1: only when adding git objects */
 unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;