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A Scalable, User-Friendly Source Control System.
ac33b6df10
I ran into a bug while importing a large repository into mercurial. The diff algorithm does not allocate a big enough array of hunks for some test cases. This results in memory corruption, and possibly, as in my case, a seg fault. You should be able to reproduce this problem with any case of more than a few lines that follows this pattern: a b = = 1 1 2 2 3 4 3 5 . 4 . . 5 . . . I.e., "a" has blank lines on every other line that have been removed in "b". In this case, the number of matching hunks is equal to the number of lines in "b". This is more than ((an + bn)/4 + 2). I'm not sure what motivates this formula, but when I changed it to the smaller of an or bn (+ 1), it works. [comment added by mpm] |
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contrib | ||
doc | ||
mercurial | ||
templates | ||
tests | ||
.hgignore | ||
comparison.txt | ||
CONTRIBUTORS | ||
COPYING | ||
hg | ||
hgeditor | ||
hgmerge | ||
hgweb.cgi | ||
MANIFEST.in | ||
notes.txt | ||
PKG-INFO | ||
README | ||
rewrite-log | ||
setup.py | ||
TODO |
MERCURIAL QUICK-START Setting up Mercurial: Note: some distributions fails to include bits of distutils by default, you'll need python-dev to install. You'll also need a C compiler and a 3-way merge tool like merge, tkdiff, or kdiff3. First, unpack the source: $ tar xvzf mercurial-<ver>.tar.gz $ cd mercurial-<ver> To install system-wide: $ python setup.py install # change python to python2.3 if 2.2 is default To install in your home directory (~/bin and ~/lib, actually), run: $ python2.3 setup.py install --home=~ $ export PYTHONPATH=${HOME}/lib/python # (or lib64/ on some systems) $ export PATH=${HOME}/bin:$PATH # add these to your .bashrc And finally: $ hg # test installation, show help If you get complaints about missing modules, you probably haven't set PYTHONPATH correctly. Setting up a Mercurial project: $ cd project/ $ hg init # creates .hg $ hg addremove # add all unknown files and remove all missing files $ hg commit # commit all changes, edit changelog entry Mercurial will look for a file named .hgignore in the root of your repository which contains a set of regular expressions to ignore in file paths. Branching and merging: $ hg clone linux linux-work # create a new branch $ cd linux-work $ <make changes> $ hg commit $ cd ../linux $ hg pull ../linux-work # pull changesets from linux-work $ hg update -m # merge the new tip from linux-work into # our working directory $ hg commit # commit the result of the merge Importing patches: Fast: $ patch < ../p/foo.patch $ hg addremove $ hg commit Faster: $ patch < ../p/foo.patch $ hg commit `lsdiff -p1 ../p/foo.patch` Fastest: $ cat ../p/patchlist | xargs hg import -p1 -b ../p Exporting a patch: (make changes) $ hg commit $ hg tip 28237:747a537bd090880c29eae861df4d81b245aa0190 $ hg export 28237 > foo.patch # export changeset 28237 Network support: # pull from the primary Mercurial repo foo$ hg clone http://selenic.com/hg/ foo$ cd hg # export your current repo via HTTP with browsable interface foo$ hg serve -n "My repo" -p 80 # pushing changes to a remote repo with SSH foo$ hg push ssh://user@example.com/~/hg/ # merge changes from a remote machine bar$ hg pull http://foo/ bar$ hg update -m # merge changes into your working directory # Set up a CGI server on your webserver foo$ cp hgweb.cgi ~/public_html/hg/index.cgi foo$ emacs ~/public_html/hg/index.cgi # adjust the defaults