svn commands and dos redirection

[Christophe R <ch...@comcast.net>]

Hi,

Under Windows XP, with svn 1.6.17  (I also tried with 1.7.4) running
svn pl -R -v .
works as expected (I get a line "properties on <item>, followed by the 
properties), for each item.

But when I redirect the same command  to a file:
svn pl -R . >foo.txt
the output in the resulting file is out of order: the "propeties on '.' 
" line shows up after 658 lines of properties! And it is followed by 100 
lines "properties on". There are long blocks of properties without 
"properties on" header.

adding the --xml option keeps the proper order, both on console and when 
redirected.

This makes it difficult to write DOS scripts that handle svn output...I 
have also tried using loops instead of redirection, but things still 
show out of order:
FOR /F "usebackq tokens=* " %% IN in (`svn pl -R -v .>`) DO (ECHO %%G)
I also try piping, no luck, the following gives a messed up output too:
svn pl -R -v . | more

I ended up looping on each item, calling svn pl each time, but this is 
painful (dealing with hidden items etc...)

svn pg seems to be working.

Is it just me? Or a defect? Any workaround (other than --xml or using 
something more evolved than batch file)? Would there be other commands 
affected?

Thanks

Christophe

Re: svn commands and dos redirection

[chroyer <ch...@comcast.net>]

Thank you Daniel,

> From: "Daniel Shahaf" <d....@daniel.shahaf.name>
> See line 1063:1085 of
> https://svn.apache.org/repos/asf/subversion/trunk/subversion/svnlook/main.c
> for one possible explanation. If that is the case here, too, you would
> need to disable stdout buffering --- adding a flush() call to svn's
> code
> is the easiest way, but perhaps not the only way, to do that.

since I am not set up to make and test those changes, it seems that I should write this as a defect. I will read up on that!

Christophe

Re: svn commands and dos redirection

[Daniel Shahaf <d....@daniel.shahaf.name>]

See line 1063:1085 of
https://svn.apache.org/repos/asf/subversion/trunk/subversion/svnlook/main.c
for one possible explanation.  If that is the case here, too, you would
need to disable stdout buffering --- adding a flush() call to svn's code
is the easiest way, but perhaps not the only way, to do that.

Christophe R wrote on Sun, May 06, 2012 at 21:23:59 -0700:
> Hi,
>
> Under Windows XP, with svn 1.6.17  (I also tried with 1.7.4) running
> svn pl -R -v .
> works as expected (I get a line "properties on <item>, followed by the  
> properties), for each item.
>
> But when I redirect the same command  to a file:
> svn pl -R . >foo.txt
> the output in the resulting file is out of order: the "propeties on '.'  
> " line shows up after 658 lines of properties! And it is followed by 100  
> lines "properties on". There are long blocks of properties without  
> "properties on" header.
>
> adding the --xml option keeps the proper order, both on console and when  
> redirected.
>
> This makes it difficult to write DOS scripts that handle svn output...I  
> have also tried using loops instead of redirection, but things still  
> show out of order:
> FOR /F "usebackq tokens=* " %% IN in (`svn pl -R -v .>`) DO (ECHO %%G)
> I also try piping, no luck, the following gives a messed up output too:
> svn pl -R -v . | more
>
> I ended up looping on each item, calling svn pl each time, but this is  
> painful (dealing with hidden items etc...)
>
> svn pg seems to be working.
>
> Is it just me? Or a defect? Any workaround (other than --xml or using  
> something more evolved than batch file)? Would there be other commands  
> affected?
>
> Thanks
>
> Christophe