help: clarify contents of revlog index
The previous wording indicated that field at index 3 was the
size of the decompressed chunk, not the size of the full
revision text.
--- a/mercurial/help/internals/revlogs.txt Tue Nov 22 13:32:05 2016 -0800
+++ b/mercurial/help/internals/revlogs.txt Tue Nov 22 18:13:02 2016 -0800
@@ -92,7 +92,8 @@
8-11 (4 bytes)
Compressed length of revision data / chunk as stored in revlog.
12-15 (4 bytes)
- Uncompressed length of revision data / chunk.
+ Uncompressed length of revision data. This is the size of the full
+ revision data, not the size of the chunk post decompression.
16-19 (4 bytes)
Base or previous revision this revision's delta was produced against.
-1 means this revision holds full text (as opposed to a delta).