[PATCH 3/4] document add_[file_]to_index

[Stefan Beller <sbeller@google.com>]

Signed-off-by: Stefan Beller <sbeller@google.com>
---
 cache.h | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/cache.h b/cache.h
index 26632065a5..acc639d6e0 100644
--- a/cache.h
+++ b/cache.h
@@ -605,13 +605,20 @@ extern int remove_index_entry_at(struct index_state *, int pos);
 
 extern void remove_marked_cache_entries(struct index_state *istate);
 extern int remove_file_from_index(struct index_state *, const char *path);
-#define ADD_CACHE_VERBOSE 1
-#define ADD_CACHE_PRETEND 2
-#define ADD_CACHE_IGNORE_ERRORS	4
-#define ADD_CACHE_IGNORE_REMOVAL 8
-#define ADD_CACHE_INTENT 16
+
+#define ADD_CACHE_VERBOSE 1		/* verbose */
+#define ADD_CACHE_PRETEND 2 		/* dry run */
+#define ADD_CACHE_IGNORE_ERRORS 4	/* ignore errors */
+#define ADD_CACHE_IGNORE_REMOVAL 8	/* do not remove files from index */
+#define ADD_CACHE_INTENT 16		/* intend to add later; stage empty file */
+/*
+ * Adds the given path the index, respecting the repsitory configuration, e.g.
+ * in case insensitive file systems, the path is normalized.
+ */
 extern int add_to_index(struct index_state *, const char *path, struct stat *, int flags);
+/* stat the file then call add_to_index */
 extern int add_file_to_index(struct index_state *, const char *path, int flags);
+
 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, unsigned int refresh_options);
 extern int chmod_index_entry(struct index_state *, struct cache_entry *ce, char flip);
 extern int ce_same_name(const struct cache_entry *a, const struct cache_entry *b);
-- 
2.11.0.299.g762782ba8a