Add the COPY_ALWAYS option

The suite now honors the `COPY_ALWAYS` option in rcrc(5). This can be
set to a space-separated list of file globs. Any file matching a glob is
copied instead of symlinked. This is handy both for secure programs
(`netrc`, `ssh/id_*`) and for programs that oddly re-write files
(`weechat/*`).

To always copy everything, use the `*` glob.

This is reflected throughout the suite as follows:

* lsrc now has a `-F` option which shows a symbol to indicate whether it
  is a symlink (`@`) or a copy (`X`).
* rcdn only removes symlinks unless the file under question matches a
  `COPY_ALWAYS` glob, in which case it is removed regardless of whether
  it is a symlink.
* rcup will copy instead of symlinking any file that matches any
  `COPY_ALWAYS` glob.

1 files changed, 11 insertions, 4 deletions

diff --git a/bin/rcdn b/bin/rcdn
index df882e8..d809796 100755
--- a/bin/rcdn
+++ b/bin/rcdn
@@ -6,10 +6,11 @@
 remove_link() {
   local dest=$1
   local original=$2
+  local sigil=$3
 
   if [ x$dest = "x/" ]; then
     $VERBOSE "not a symlink, skipping: $original"
-  elif [ -L $dest ]; then
+  elif [ -L $dest -o "x$sigil" = "xX" ]; then
     $RM -rf $dest
     rmdir -p `dirname $original` 2>/dev/null
   else
@@ -62,6 +63,8 @@ handle_command_line() {
   $DEBUG "LS_ARGS: $LS_ARGS"
 }
 
+LS_ARGS=-F
+
 if [ -e $HOME/.rcrc ]; then
   . $HOME/.rcrc
 fi
@@ -69,8 +72,12 @@ fi
 handle_command_line $*
 
 for dest_and_src in `lsrc $LS_ARGS`; do
-  dest=`echo $dest_and_src | sed 's/:.*//'`
-  src=`echo $dest_and_src | sed 's/.*://'`
+  saved_ifs=$IFS
+  IFS=:
+  set $dest_and_src
+  IFS=$saved_ifs
+  dest=$1
+  sigil=$3
 
-  remove_link $dest $dest
+  remove_link $dest $dest $sigil
 done