Mercurial > hg
annotate mercurial/help/diffs.txt @ 35935:00b9e26d727b
sshpeer: establish SSH connection before class instantiation
We want to move the handshake to before peers are created so
we can instantiate a different peer class depending on the
results of the handshake. This necessitates moving the SSH
process invocation to outside the peer class.
As part of the code move, some variables were renamed for
clarity. util.popen4() returns stdin, stdout, and stderr in
their typical file descriptor order. However, stdin and stdout
were being mapped to "pipeo" and "pipei" respectively. "o"
for "stdin" and "i" for "stdout" is a bit confusing. Although
it does make sense for "output" and "input" from the perspective
of the client. But in the context of the new function, it makes
sense to refer to these as their file descriptor names.
In addition, the last use of self._path disappeared, so we stop
setting that attribute and we can delete the redundant URL
parsing necessary to set it.
Differential Revision: https://phab.mercurial-scm.org/D2031
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 05 Feb 2018 14:05:59 -0800 |
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1 Mercurial's default format for showing changes between two versions of |
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2 a file is compatible with the unified format of GNU diff, which can be |
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3 used by GNU patch and many other standard tools. |
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4 |
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5 While this standard format is often enough, it does not encode the |
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6 following information: |
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7 |
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8 - executable status and other permission bits |
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9 - copy or rename information |
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10 - changes in binary files |
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11 - creation or deletion of empty files |
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12 |
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13 Mercurial also supports the extended diff format from the git VCS |
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14 which addresses these limitations. The git diff format is not produced |
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15 by default because a few widespread tools still do not understand this |
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16 format. |
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17 |
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18 This means that when generating diffs from a Mercurial repository |
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19 (e.g. with :hg:`export`), you should be careful about things like file |
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20 copies and renames or other things mentioned above, because when |
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21 applying a standard diff to a different repository, this extra |
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22 information is lost. Mercurial's internal operations (like push and |
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23 pull) are not affected by this, because they use an internal binary |
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24 format for communicating changes. |
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25 |
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26 To make Mercurial produce the git extended diff format, use the --git |
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27 option available for many commands, or set 'git = True' in the [diff] |
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28 section of your configuration file. You do not need to set this option |
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29 when importing diffs in this format or using them in the mq extension. |