Mercurial > hg
annotate contrib/plan9/9diff @ 50005:16b78c0de506
locking: take the `wlock` for the full `hg remove` duration
Otherwise, there is a race condition window between the time we resolve the
file to remove with the matcher and the time we lock the repo and modify the
dirstate.
For example, the working copy might have been updated away, or purged, and the
matched files would no longer be correct.
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 13 Dec 2022 04:22:46 +0100 |
parents | f9262456fb01 |
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plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
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1 #!/bin/rc |
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2 # 9diff - Mercurial extdiff wrapper for diff(1) |
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3 |
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4 rfork e |
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5 |
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6 fn getfiles { |
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7 cd $1 && |
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8 for(f in `{du -as | awk '{print $2}'}) |
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9 test -f $f && echo `{cleanname $f} |
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10 } |
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11 |
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12 fn usage { |
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13 echo >[1=2] usage: 9diff [diff options] parent child root |
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14 exit usage |
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15 } |
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16 |
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17 opts=() |
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18 while(~ $1 -*){ |
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19 opts=($opts $1) |
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Steven Stallion <sstallion@gmail.com>
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20 shift |
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21 } |
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22 if(! ~ $#* 3) |
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23 usage |
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24 |
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25 # extdiff will set the parent and child to a single file if there is |
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26 # only one change. If there are multiple changes, directories will be |
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Steven Stallion <sstallion@gmail.com>
parents:
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27 # set. diff(1) does not cope particularly with directories; instead we |
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Steven Stallion <sstallion@gmail.com>
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28 # do the recursion ourselves and diff each file individually. |
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Steven Stallion <sstallion@gmail.com>
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29 if(test -f $1) |
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30 diff $opts $1 $2 |
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31 if not{ |
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32 # extdiff will create a snapshot of the working copy to prevent |
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33 # conflicts during the diff. We circumvent this behavior by |
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Steven Stallion <sstallion@gmail.com>
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34 # diffing against the repository root to produce plumbable |
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Steven Stallion <sstallion@gmail.com>
parents:
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35 # output. This is antisocial. |
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plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents:
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36 for(f in `{sort -u <{getfiles $1} <{getfiles $2}}){ |
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parents:
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37 file1=$1/$f; test -f $file1 || file1=/dev/null |
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plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
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38 file2=$3/$f; test -f $file2 || file2=/dev/null |
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plan9: initial support for plan 9 from bell labs
Steven Stallion <sstallion@gmail.com>
parents:
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39 diff $opts $file1 $file2 |
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Steven Stallion <sstallion@gmail.com>
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40 } |
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Steven Stallion <sstallion@gmail.com>
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41 } |
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42 exit '' |