The original implementation of log walked backwards through history,
which had terrible behaviour. It took several minutes to view
complete kernel change history on a fast machine, for example.
The rewrite uses a windowed approach to walk hunks of history
forwards, while still giving results in reverse order. This reduces
run time from five minutes to five seconds on my system.
In addition, the rewrite uses our normal name handling mechanisms, so
you can run a command like "hg log net/ipv4/**.c" and get a useful
answer. It optimises for three different cases (no arguments, only
files, and anything goes), so it performs well in all circumstances
I've tested.
Based on a patch by Fuming Wang
- add util.binary which decides whether a file is binary if it has any NUL
characters in the first 1K.
- teach mdiff.unidiff to print "binary file <x> has changed" for binary files
- add text flag to cause unidiff and dodiff to treat all files as text
- add -a and --text flags (like diff(1)) to hg diff and export
- update docs
- allow passing a repo object instead of a path
(if we get a string, we construct a repo object)
- hg serve: pass options via repo.ui.setconfig
- add --style option
- get default name from repo.root rather than getcwd()
- remove template argument to hgweb()
- reduce create_server from 8 args to 1
Example:
% hg log | head -12
changeset: 791:41440890e57d2dbacde03a2a114e5114a031ea4a
tag: tip
user: Samuel Tardieu <sam@rfc1149.net>
date: Mon Jul 25 13:24:15 2005 +0200
summary: Parse various date formats when accepting user specified dates
[...]
changeset: 787:ba5c2021364ee876dae170e8f153e43bd0b2bd73
parent: 785:31a80e3723cee0a5991340facb2707e71983eb41
user: Bryan O'Sullivan <bos@serpentine.com>
date: Sun Jul 24 00:39:24 2005 -0800
summary: Get "forget" command to use new walk code.
[...]
Most read operations in hg don't need locks because we order reads and
writes for consistency. Clone is an exception to this as we're copying
entire file histories and could end up with more file history copied
than we have commits.
For now, make clone take a lock on the source repo. Non-hardlinked
clone should eventually be changed to use lockless pull.
named branching is when you identify a head by a tag on an earlier revision.
This patch adds repo.branchlookup for searching through the tree to
find branch tags for heads.
hg update -b tag is added to checkout based on branch tags
hg heads -b is added to print the tag associated with each head
