Teach update-index about --ignore-submodules

Like with the diff machinery, update-index should sometimes just
ignore submodules (e.g. to determine a clean state before a rebase).

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index 66be18e..0664060 100644 (file)
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -15,6 +15,7 @@ SYNOPSIS
             [--cacheinfo <mode> <object> <file>]\*
             [--chmod=(+|-)x]
             [--assume-unchanged | --no-assume-unchanged]
+            [--ignore-submodules]
             [--really-refresh] [--unresolve] [--again | -g]
             [--info-only] [--index-info]
             [-z] [--stdin]
@@ -54,6 +55,10 @@ OPTIONS
         default behavior is to error out.  This option makes
         git-update-index continue anyway.
 
+--ignore-submodules:
+       Do not try to update submodules.  This option is only respected
+       when passed before --refresh.
+
 --unmerged::
         If --refresh finds unmerged changes in the index, the default
         behavior is to error out.  This option makes git-update-index

diff --git a/builtin-update-index.c b/builtin-update-index.c
index a8795d3..d4c85c0 100644 (file)
--- a/builtin-update-index.c
+++ b/builtin-update-index.c
@@ -593,6 +593,10 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
                                refresh_flags |= REFRESH_QUIET;
                                continue;
                        }
+                       if (!strcmp(path, "--ignore-submodules")) {
+                               refresh_flags |= REFRESH_IGNORE_SUBMODULES;
+                               continue;
+                       }
                        if (!strcmp(path, "--add")) {
                                allow_add = 1;
                                continue;

diff --git a/cache.h b/cache.h
index 093f04c..b753b49 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -388,6 +388,7 @@ extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st);
 #define REFRESH_UNMERGED       0x0002  /* allow unmerged */
 #define REFRESH_QUIET          0x0004  /* be quiet about it */
 #define REFRESH_IGNORE_MISSING 0x0008  /* ignore non-existent */
+#define REFRESH_IGNORE_SUBMODULES      0x0008  /* ignore submodules */
 extern int refresh_index(struct index_state *, unsigned int flags, const char **pathspec, char *seen);
 
 struct lock_file {

diff --git a/read-cache.c b/read-cache.c
index 0382804..47dd201 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -942,6 +942,7 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
        int allow_unmerged = (flags & REFRESH_UNMERGED) != 0;
        int quiet = (flags & REFRESH_QUIET) != 0;
        int not_new = (flags & REFRESH_IGNORE_MISSING) != 0;
+       int ignore_submodules = (flags & REFRESH_IGNORE_SUBMODULES) != 0;
        unsigned int options = really ? CE_MATCH_IGNORE_VALID : 0;
 
        for (i = 0; i < istate->cache_nr; i++) {
@@ -949,6 +950,9 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
                int cache_errno = 0;
 
                ce = istate->cache[i];
+               if (ignore_submodules && S_ISGITLINK(ce->ce_mode))
+                       continue;
+
                if (ce_stage(ce)) {
                        while ((i < istate->cache_nr) &&
                               ! strcmp(istate->cache[i]->name, ce->name))