Pre-up, post-up, pre-down, and post-down hooks

These are programs that, if they exist, will run before or after the
syncronization/removal is run. Three use cases caused this:

1. The thoughtbot dotfiles will run a vundle installation set of
commands after intitial synchronization.

2. I changed the location of `.bash_history` to `.bash/history` and
wanted to move `.bash_history` to `.bash/history` after up to preserve
existing history.

3. Moving from an existing old-style custom install script to `rcup`
might require some cleanup; this happened in practice, and required a
simple script.

1 files changed, 5 insertions, 0 deletions

diff --git a/bin/rcdn b/bin/rcdn
index d809796..cae9dc8 100755
--- a/bin/rcdn
+++ b/bin/rcdn
@@ -70,6 +70,9 @@ if [ -e $HOME/.rcrc ]; then
 fi
 
 handle_command_line $*
+: ${DOTFILES_DIRS:=$DOTFILES_DIRS $DEFAULT_DOTFILES_DIR}
+
+run_hooks pre down
 
 for dest_and_src in `lsrc $LS_ARGS`; do
   saved_ifs=$IFS
@@ -81,3 +84,5 @@ for dest_and_src in `lsrc $LS_ARGS`; do
 
   remove_link $dest $dest $sigil
 done
+
+run_hooks post down