advice: add diverging advice for novices

[thirdparty/git.git] / advice.c

diff --git a/advice.c b/advice.c
index fd189689437c7512e549482fe696f7a2d2400cd2..fbc59f9c6d6fabc9bfb014ee5062d95b9411d5e0 100644 (file)
--- a/advice.c
+++ b/advice.c
@@ -44,6 +44,7 @@ static struct {
        [ADVICE_COMMIT_BEFORE_MERGE]                    = { "commitBeforeMerge", 1 },
        [ADVICE_DETACHED_HEAD]                          = { "detachedHead", 1 },
        [ADVICE_SUGGEST_DETACHING_HEAD]                 = { "suggestDetachingHead", 1 },
+       [ADVICE_DIVERGING]                              = { "diverging", 1 },
        [ADVICE_FETCH_SHOW_FORCED_UPDATES]              = { "fetchShowForcedUpdates", 1 },
        [ADVICE_GRAFT_FILE_DEPRECATED]                  = { "graftFileDeprecated", 1 },
        [ADVICE_IGNORED_HOOK]                           = { "ignoredHook", 1 },
@@ -217,6 +218,14 @@ void NORETURN die_conclude_merge(void)
 
 void NORETURN die_ff_impossible(void)
 {
+       advise_if_enabled(ADVICE_DIVERGING,
+               _("Diverging branches can't be fast-forwarded, you need to either:\n"
+               "\n"
+               "\tgit merge --no-ff\n"
+               "\n"
+               "or:\n"
+               "\n"
+               "\tgit rebase\n"));
        die(_("Not possible to fast-forward, aborting."));
 }