pathspec: give better message for submodule related pathspec error

diff --git a/xdiff/xemit.c b/xdiff/xemit.c
index b52b4b9c1ee3ba3c6b94594af68a275e458bebaf..7389ce41022dbee5776d44a937e8bcf780656f42 100644 (file)
--- a/xdiff/xemit.c
+++ b/xdiff/xemit.c
@@ -239,7 +239,7 @@ int xdl_emit_diff(xdfenv_t *xe, xdchange_t *xscr, xdemitcb_t *ecb,
                        if (xche->next) {
                                long l = XDL_MIN(xche->next->i1,
                                                 xe->xdf1.nrec - 1);
-                               if (l <= e1 ||
+                               if (l - xecfg->ctxlen <= e1 ||
                                    get_func_line(xe, xecfg, NULL, l, e1) < 0) {
                                        xche = xche->next;
                                        goto post_context_calculation;