[Laszlo-dev] applying a changeset

[Benjamin Shine]

There are two ways to apply a changeset.

Mechanism #1 is reliable but may destroy local changes, if there are  
changes to the same file. Explode the tar,  uncompress files.tar,  
figure out where in the source tree files.tar is rooted, then copy  
the files in files.tar into your lps tree. HOWEVER this will  
overwrite locally-modified files; do NOT do it if  you have local  
changes in the files this changeset changes. This mechanism will not  
delete files that the changeset schedules for deletion; this is a bug.

Mechanism #2 is a little bit more fiddly but won't destroy local  
changes. It won't properly add, delete, or move files added, deleted  
or moved by the changeset; only patch them. Explode the tar, then  
figure out where the changeset is rooted from. In your lps tree, cd  
to the corresponding source directory. Then call /path/to/changeset/ 
apply.sh. It will attempt to modify the local files with the patches.  
It will complain noisily if it has trouble applying the patches.

I recommend #1, but only ever do it to a working copy which does not  
have any local changes that you care about, so you do not risk  
overwriting your own changes.

-ben

Benjamin Shine
Software Engineer, Open Laszlo / Laszlo Systems
ben at laszlosystems.com