[issue2579] Problem with hg and junctions under Windows

[scott araujo]

New submission from scott araujo <saraujo at webmd.net>:

I'm having a problem with how Mercurial deals with junctions under 
Windows.  

I create a junction to a dir/files tracked in hg, the original files are 
tracked in hg, the junctions to them are not.  Hg commands work fine, the 
junctions show up as untracked files.  If I delete the original file in 
hg, hg commands (st, update, etc.) don't work because they get hung up 
looking at the dead junction that points to a non-existent file.  

I can appreciate the confusion that hg faces trying to get information on 
a file that doesn't exist but I think this should be a non-issue.  Whether 
the file the junction points to exists or not, hg should know that it's 
not tracking that file and skip past it without trying to get more 
information.  Here's an example:


C:\build\basedir>dir /b/s realdir
C:\build\basedir\realdir\test1
C:\build\basedir\realdir\test2
C:\build\basedir\realdir\test1\junk.html
C:\build\basedir\realdir\test2\junk.html

C:\build\basedir>mkdir junctions

C:\build\basedir>cd junctions

C:\build\basedir\junctions>mklink /j j-test1 c:\build\basedir\realdir\test1
Junction created for j-test1 <<===>> c:\build\basedir\realdir\test1

C:\build\basedir\junctions>mklink /j j-test2 c:\build\basedir\realdir\test2
Junction created for j-test2 <<===>> c:\build\basedir\realdir\test2

C:\build\basedir>dir /s junctions
 Volume in drive C has no label.
 Volume Serial Number is 2A5E-AFA8

 Directory of C:\build\basedir\junctions

01/06/2011  10:28 AM    <DIR>          .
01/06/2011  10:28 AM    <DIR>          ..
01/06/2011  10:28 AM    <JUNCTION>     j-test1 
[c:\build\basedir\realdir\test1]
01/06/2011  10:28 AM    <JUNCTION>     j-test2 
[c:\build\basedir\realdir\test2]
               0 File(s)              0 bytes

 Directory of C:\build\basedir\junctions\j-test1

01/06/2011  10:17 AM    <DIR>          .
01/06/2011  10:17 AM    <DIR>          ..
01/06/2011  10:17 AM               379 junk.html
               1 File(s)            379 bytes

 Directory of C:\build\basedir\junctions\j-test2

01/05/2011  05:04 PM    <DIR>          .
01/05/2011  05:04 PM    <DIR>          ..
01/05/2011  05:04 PM               332 junk.html
               1 File(s)            332 bytes

     Total Files Listed:
               2 File(s)            711 bytes
               8 Dir(s)  171,037,564,928 bytes free

C:\build\basedir>hg st
? junctions\j-test1\junk.html
? junctions\j-test2\junk.html

C:\build\basedir>hg rm realdir\test1\junk.html

C:\build\basedir>hg commit -m"removing one file from hg"

C:\build\basedir>hg st
abort: The system cannot find the path specified: 
C:\build\basedir\junctions/j-test1

C:\build\basedir>


Thanks for your help,
Scott

----------
messages: 14826
nosy: scott_araujo
priority: bug
status: unread
title: Problem with hg and junctions under Windows
topic: hg

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Mercurial issue tracker <bugs at mercurial.selenic.com>
<http://mercurial.selenic.com/bts/issue2579>
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