resolve-undo: allow plumbing to clear the information

At the Porcelain level, operations such as merge that populate an
initially cleanly merged index with conflicted entries clear the
resolve-undo information upfront.  Give scripted Porcelains a way
to do the same, by implementing "update-index --clear-resolve-info".

With this, a scripted Porcelain may "update-index --clear-resolve-info"
first and repeatedly run "update-index --cacheinfo" to stuff unmerged
entries to the index, to be resolved by the user with "git add" and
stuff.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-update-index.c b/builtin-update-index.c
index a6b7f2d6361fc1e8ea9713082affc72362f08d76..a19e78603cb4f0b6464bd974fc7bc12b3ad6c0d7 100644 (file)
--- a/builtin-update-index.c
+++ b/builtin-update-index.c
@@ -9,6 +9,7 @@
 #include "tree-walk.h"
 #include "builtin.h"
 #include "refs.h"
+#include "resolve-undo.h"
 
 /*
  * Default to not allowing changes to the list of files. The
@@ -703,6 +704,10 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
                                verbose = 1;
                                continue;
                        }
+                       if (!strcmp(path, "--clear-resolve-undo")) {
+                               resolve_undo_clear();
+                               continue;
+                       }
                        if (!strcmp(path, "-h") || !strcmp(path, "--help"))
                                usage(update_index_usage);
                        die("unknown option %s", path);

diff --git a/t/t2030-unresolve-info.sh b/t/t2030-unresolve-info.sh
index 785c8b3fca1707ca0e2290acbf3c6585ea7cb0fd..984480271c0deef50dddae215a59aa62471c0e47 100755 (executable)
--- a/t/t2030-unresolve-info.sh
+++ b/t/t2030-unresolve-info.sh
@@ -85,4 +85,16 @@ test_expect_success 'rm records reset clears' '
        check_resolve_undo discarded
 '
 
+test_expect_success 'plumbing clears' '
+       prime_resolve_undo &&
+       test_tick &&
+       git commit -m merged &&
+       echo committing keeps &&
+       check_resolve_undo kept file initial:file second:file third:file &&
+
+       echo plumbing clear &&
+       git update-index --clear-resolve-undo &&
+       check_resolve_undo cleared
+'
+
 test_done