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-rw-r--r--Documentation/technical/index-format.txt13
1 files changed, 7 insertions, 6 deletions
diff --git a/Documentation/technical/index-format.txt b/Documentation/technical/index-format.txt
index 9d25b30178..dcd51b97d9 100644
--- a/Documentation/technical/index-format.txt
+++ b/Documentation/technical/index-format.txt
@@ -1,7 +1,7 @@
GIT index format
================
-= The git index file has the following format
+== The git index file has the following format
All binary numbers are in network byte order. Version 2 is described
here unless stated otherwise.
@@ -12,7 +12,7 @@ GIT index format
The signature is { 'D', 'I', 'R', 'C' } (stands for "dircache")
4-byte version number:
- The current supported versions are 2 and 3.
+ The current supported versions are 2, 3 and 4.
32-bit number of index entries.
@@ -93,8 +93,8 @@ GIT index format
12-bit name length if the length is less than 0xFFF; otherwise 0xFFF
is stored in this field.
- (Version 3) A 16-bit field, only applicable if the "extended flag"
- above is 1, split into (high to low bits).
+ (Version 3 or later) A 16-bit field, only applicable if the
+ "extended flag" above is 1, split into (high to low bits).
1-bit reserved for future
@@ -161,8 +161,9 @@ GIT index format
this span of index as a tree.
An entry can be in an invalidated state and is represented by having
- -1 in the entry_count field. In this case, there is no object name
- and the next entry starts immediately after the newline.
+ a negative number in the entry_count field. In this case, there is no
+ object name and the next entry starts immediately after the newline.
+ When writing an invalid entry, -1 should always be used as entry_count.
The entries are written out in the top-down, depth-first order. The
first entry represents the root level of the repository, followed by the