I've just started exploring drush, so please excuse me if something like this is already available. If it is, I'd like to know the command.
To make debugging easier, it would be nice to have the option to dump the debug info to a file. I understand one can increase the buffer size for a command window (I'm using Git from git-scm on Windows 7), click the Git icon in the upper left and use copy/paste, but I thought an option to dump debug information directly to a file would be handy. Something like:
$ drush make drupal.make htdocs/ --debug --debug-file="/some/path/to/file"
In my case, I was running a make file with debug enabled, it would run through the whole process but not create the site. After copying and pasting into a file and searching for errors, I found one module failing to download. Once I fixed it, everything worked fine. Not sure why drush doesn't fail with a warning, but that is neither here nor there. Just thought it would be nice to have the debug info write directly to file if the option is included.
If I new more about the internal workings of drush, I would write a patch myself.