update-index: fix worktree setup

diff --git a/diff.c b/diff.c
index 8746c60b9cb634bf78911c34cad1ba5a1f93d5ec..f70e6b4912911bd3f3a1d385fce7119a4a8107f6 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -1387,6 +1387,7 @@ static struct builtin_funcname_pattern {
                        "\\|"
                        "^\\(.*=[ \t]*\\(class\\|record\\).*\\)$"
                        },
+       { "bibtex", "\\(@[a-zA-Z]\\{1,\\}[ \t]*{\\{0,1\\}[ \t]*[^ \t\"@',\\#}{~%]*\\).*$" },
        { "tex", "^\\(\\\\\\(\\(sub\\)*section\\|chapter\\|part\\)\\*\\{0,1\\}{.*\\)$" },
        { "ruby", "^\\s*\\(\\(class\\|module\\|def\\)\\s.*\\)$" },
 };
@@ -1626,12 +1627,14 @@ static void builtin_checkdiff(const char *name_a, const char *name_b,
                xdemitcb_t ecb;
 
                memset(&xecfg, 0, sizeof(xecfg));
+               xecfg.ctxlen = 1; /* at least one context line */
                xpp.flags = XDF_NEED_MINIMAL;
                ecb.outf = xdiff_outf;
                ecb.priv = &data;
                xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb);
 
-               if (data.trailing_blanks_start) {
+               if ((data.ws_rule & WS_TRAILING_SPACE) &&
+                   data.trailing_blanks_start) {
                        fprintf(o->file, "%s:%d: ends with blank lines.\n",
                                data.filename, data.trailing_blanks_start);
                        data.status = 1; /* report errors */