1 files changed, 3 insertions, 2 deletions

diff --git a/shared.c b/shared.c
index 58837dc..06f70bb 100644
--- a/shared.c
+++ b/shared.c
@@ -263,7 +263,8 @@ int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf)
 
 int cgit_diff_files(const unsigned char *old_sha1,
                     const unsigned char *new_sha1, unsigned long *old_size,
-                    unsigned long *new_size, int *binary, linediff_fn fn)
+                    unsigned long *new_size, int *binary, int context,
+                    linediff_fn fn)
 {
         mmfile_t file1, file2;
         xpparam_t diff_params;
@@ -290,7 +291,7 @@ int cgit_diff_files(const unsigned char *old_sha1,
         memset(&emit_params, 0, sizeof(emit_params));
         memset(&emit_cb, 0, sizeof(emit_cb));
         diff_params.flags = XDF_NEED_MINIMAL;
-        emit_params.ctxlen = 3;
+        emit_params.ctxlen = context > 0 ? context : 3;
         emit_params.flags = XDL_EMIT_FUNCNAMES;
         emit_cb.outf = filediff_cb;
         emit_cb.priv = fn;