documentation: merge-base: explain "git merge-base" with more than 2 args

diff --git a/read-cache.c b/read-cache.c
index f83de8c4158e08bab3e0445c4d15caf2d4d105aa..1cae361c6c3066e0aedba7872ebda3766aa94a52 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -38,6 +38,22 @@ static void replace_index_entry(struct index_state *istate, int nr, struct cache
        istate->cache_changed = 1;
 }
 
+void rename_index_entry_at(struct index_state *istate, int nr, const char *new_name)
+{
+       struct cache_entry *old = istate->cache[nr], *new;
+       int namelen = strlen(new_name);
+
+       new = xmalloc(cache_entry_size(namelen));
+       copy_cache_entry(new, old);
+       new->ce_flags &= ~(CE_STATE_MASK | CE_NAMEMASK);
+       new->ce_flags |= (namelen >= CE_NAMEMASK ? CE_NAMEMASK : namelen);
+       memcpy(new->name, new_name, namelen + 1);
+
+       cache_tree_invalidate_path(istate->cache_tree, old->name);
+       remove_index_entry_at(istate, nr);
+       add_index_entry(istate, new, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE);
+}
+
 /*
  * This only updates the "non-critical" parts of the directory
  * cache, ie the parts that aren't tracked by GIT, and only used
@@ -181,7 +197,7 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
        }
        if (ce->ce_mtime != (unsigned int) st->st_mtime)
                changed |= MTIME_CHANGED;
-       if (ce->ce_ctime != (unsigned int) st->st_ctime)
+       if (trust_ctime && ce->ce_ctime != (unsigned int) st->st_ctime)
                changed |= CTIME_CHANGED;
 
        if (ce->ce_uid != (unsigned int) st->st_uid ||
@@ -528,7 +544,7 @@ int add_to_index(struct index_state *istate, const char *path, struct stat *st,
                ce = create_alias_ce(ce, alias);
        ce->ce_flags |= CE_ADDED;
 
-       /* It was suspected to be recily clean, but it turns out to be Ok */
+       /* It was suspected to be racily clean, but it turns out to be Ok */
        was_same = (alias &&
                    !ce_stage(alias) &&
                    !hashcmp(alias->sha1, ce->sha1) &&
@@ -980,7 +996,10 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
        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;
+       const char *needs_update_message;
 
+       needs_update_message = ((flags & REFRESH_SAY_CHANGED)
+                               ? "locally modified" : "needs update");
        for (i = 0; i < istate->cache_nr; i++) {
                struct cache_entry *ce, *new;
                int cache_errno = 0;
@@ -1019,7 +1038,7 @@ int refresh_index(struct index_state *istate, unsigned int flags, const char **p
                        }
                        if (quiet)
                                continue;
-                       printf("%s: needs update\n", ce->name);
+                       printf("%s: %s\n", ce->name, needs_update_message);
                        has_errors = 1;
                        continue;
                }
@@ -1410,3 +1429,34 @@ int write_index(const struct index_state *istate, int newfd)
        }
        return ce_flush(&c, newfd);
 }
+
+/*
+ * Read the index file that is potentially unmerged into given
+ * index_state, dropping any unmerged entries.  Returns true is
+ * the index is unmerged.  Callers who want to refuse to work
+ * from an unmerged state can call this and check its return value,
+ * instead of calling read_cache().
+ */
+int read_index_unmerged(struct index_state *istate)
+{
+       int i;
+       struct cache_entry **dst;
+       struct cache_entry *last = NULL;
+
+       read_index(istate);
+       dst = istate->cache;
+       for (i = 0; i < istate->cache_nr; i++) {
+               struct cache_entry *ce = istate->cache[i];
+               if (ce_stage(ce)) {
+                       remove_name_hash(ce);
+                       if (last && !strcmp(ce->name, last->name))
+                               continue;
+                       cache_tree_invalidate_path(istate->cache_tree, ce->name);
+                       last = ce;
+                       continue;
+               }
+               *dst++ = ce;
+       }
+       istate->cache_nr = dst - istate->cache;
+       return !!last;
+}