Subversion 1.8 appreciation thread

[Tobias Bading <tb...@web.de>]

Hi *,

I'm currently checking out (no pun intended) Subversion 1.8 RC2 and 
thought a "Subversion 1.8 goodies" thread might be fun. Here we go...

Goodie #1:

Are you multitasking all day long?
Are you tired of remembering all those fancy changelist names you came 
up with to keep the chaos in check?
Well, fret no more. Let your tab key do the thinking!

Simply create a shell script called svn-changelists with this content:

#!/bin/bash
dir=$PWD
while [[ ${#dir} != 0 ]]; do
   if [[ -r $dir/.svn/wc.db ]]; then
     sqlite3 $dir/.svn/wc.db 'select distinct(changelist) from actual_node;'
     break;
   fi
   dir=${dir%/*}
done

Now use it in your favority shell's completion feature. I'm using 
good-ol' tcsh, so that's

complete svn 'n@--changelist@`svn-changelists`@' [...]

Conclusion:
SQLite rulz! ;-)

Re: Subversion 1.8 appreciation thread

[Tobias Bading <tb...@web.de>]

Goody #2: (People probably came up with something like this for 
Subversion 1.7 already... anyway...)

Our company currently uses Subversion 1.6 and at first I thought 
'duel-Subversioning' 1.6 and 1.8 would lead nowhere except headaches. As 
it turns out, the fact that a Subversion 1.8 client cannot directly work 
with a Subversion 1.6 working copy is no problem at all, at least not on 
GNU/Linux in a shell or GNU Emacs.

First, make sure you have both Subversion versions installed and that 
you have links on your $PATH named svn-1.6 and svn-1.8 that link to the 
respective binaries. Then create a shell script called svn with this 
content: (work in progress)

--- snip ---

#!/bin/bash

# check whether the command uses Subversion 1.8 features:
usesNewFeature=0
for arg in "$@"; do
   if [[ "$arg" = "--search" || "$arg" = "--diff" || "$arg" = "--new" || 
"$arg" = "--old" ]]; then
     usesNewFeature=1;
     break;
   fi
done
if [[ "$1" = "upgrade" || ( "$1" = "help" && "$2" = "upgrade" ) ]]; then
   usesNewFeature=1;
fi

# decide which Subversion version to use:
if [[ $usesNewFeature = 0 && -f .svn/entries && "`head -1 .svn/entries`" 
!= "12" ]]; then
   cmd=svn-1.6
else
   cmd=svn-1.8
fi

# debug logging:
# echo `date` "[PWD=$PWD]" -- $cmd "$@" >>~/.svn.log

exec $cmd "$@"

--- snip ---

There you go. A svn command that is able to deal with 1.6 and 1.8 
working copies.

Those are the two goodies I came up with so far. Who's next?

Kind regards,
Tobias