Add -C for copying files

Some files prefer to be copies instead of symlinks---for example,
OpenSSH ignores symlinks. Add the `-C` option to mkrc(1) and rcup(1) to
handle this.

    mkrc -C .ssh
    rcup -C ssh

This does raise a synchronization problem that I do not yet know how to
solve; namely, what to do when the rc file changes. Perhaps a `rcsync`
command is in order; perhaps `rcup` should handle this; perhaps `rcsync`
is a better name for `rcup`.

2 files changed, 26 insertions, 16 deletions

diff --git a/bin/mkrc b/bin/mkrc
index d3effb8..d8ed478 100755
--- a/bin/mkrc
+++ b/bin/mkrc
@@ -35,15 +35,17 @@ tag=
 verbosity=0
 in_host=0
 version=0
+always_copy=0
 
-while getopts Vvqot:d: opt; do
+while getopts CVvqot:d: opt; do
   case "$opt" in
-    t) tag=$OPTARG;;
-    v) verbosity=$(($verbosity + 1));;
-    q) verbosity=$(($verbosity - 1));;
-    o) in_host=1;;
-    d) DOTFILES_DIR=$OPTARG;;
-    V) version=1
+    C) always_copy=1 ;;
+    t) tag=$OPTARG ;;
+    v) verbosity=$(($verbosity + 1)) ;;
+    q) verbosity=$(($verbosity - 1)) ;;
+    o) in_host=1 ;;
+    d) DOTFILES_DIR=$OPTARG ;;
+    V) version=1 ;;
   esac
 done
 shift $(($OPTIND-1))
@@ -54,6 +56,10 @@ if [ $in_host -eq 1 -a "x$tag" != "x" ]; then
   $ERROR 1 "Cannot specify both -o and -t"
 fi
 
+if [ $always_copy -eq 1 ]; then
+  INSTALL="$INSTALL -C"
+fi
+
 files=$@
 
 for file in $files; do
diff --git a/bin/rcup b/bin/rcup
index 37ccb2f..df9adac 100755
--- a/bin/rcup
+++ b/bin/rcup
@@ -7,12 +7,11 @@ link_file() {
   local src=$1
   local dest=$2
 
-  $PRINT "linking $dest"
   if [ -h $dest ]; then
-    rm -f $dest
+    $RM -f $dest
   fi
 
-  $LN -s $src $dest
+  $LN $src $dest
 }
 
 replace_file() {
@@ -78,24 +77,29 @@ handle_command_line() {
   local files=
   local excludes=
   local includes=
+  local always_copy=0
   REPLACE_ALL=0
 
-
-  while getopts VqvfiI:e:t:d: opt; do
+  while getopts CVqvfiI:e:t:d: opt; do
     case "$opt" in
-      e) excludes="$excludes $OPTARG";;
+      C) always_copy=1 ;;
+      d) dotfiles_dirs="$dotfiles_dirs $OPTARG" ;;
+      e) excludes="$excludes $OPTARG" ;;
       f) REPLACE_ALL=1 ;;
       i) REPLACE_ALL=0 ;;
-      I) includes="$includes $OPTARG";;
+      I) includes="$includes $OPTARG" ;;
+      q) verbosity=$(($verbosity - 1)) ;;
       t) arg_tags="$arg_tags $OPTARG" ;;
       v) verbosity=$(($verbosity + 1)) ;;
-      q) verbosity=$(($verbosity - 1)) ;;
-      d) dotfiles_dirs="$dotfiles_dirs $OPTARG" ;;
       V) version=1
     esac
   done
   shift $(($OPTIND-1))
 
+  if [ $always_copy -eq 1 ]; then
+    LN=cp
+  fi
+
   handle_common_flags rcup $version $verbosity
 
   tags=${arg_tags:-$TAGS}