Deprecate support for .git/info/grafts

diff --git a/commit.c b/commit.c
index 2952ec987c5ca0335c7ebaf8e20404597d576055..451d3ce8dfec5ca085c557beca4a0299e8e18606 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -12,6 +12,7 @@
 #include "prio-queue.h"
 #include "sha1-lookup.h"
 #include "wt-status.h"
+#include "advice.h"
 
 static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **);
 
@@ -176,6 +177,15 @@ static int read_graft_file(const char *graft_file)
        struct strbuf buf = STRBUF_INIT;
        if (!fp)
                return -1;
+       if (advice_graft_file_deprecated)
+               advise(_("Support for <GIT_DIR>/info/grafts is deprecated\n"
+                        "and will be removed in a future Git version.\n"
+                        "\n"
+                        "Please use \"git replace --convert-graft-file\"\n"
+                        "to convert the grafts into replace refs.\n"
+                        "\n"
+                        "Turn this message off by running\n"
+                        "\"git config advice.graftFileDeprecated false\""));
        while (!strbuf_getwholeline(&buf, fp, '\n')) {
                /* The format is just "Commit Parent1 Parent2 ...\n" */
                struct commit_graft *graft = read_graft_line(&buf);