Force some directories to be symlinks

Typically a directory structure is copied instead of symlinked, while
files are symlinked. However, some cases require symlinked dirs: git
submodules, vim plugins, and so on.

This introduces a `SYMLINK_DIRS` option for rcrc(5) that takes a
space-separated list of "exclude patterns". Any directory matching these
patterns is symlinked.

This also introduces a `-S` argument for lsrc(1), rcup(1), and rcdn(1).
This argument takes a pattern, for one-off directory symlinking. It can
be repeated.

This also introduces `-S` and `-s` for mkrc(1). `-S` will re-install the
files as symlinks, and `-s` will not.

This does work with `-C`, though perhaps unintuitively - we don't know
what the user means in this case. However, it will not crash.

Bug: `-s` does not work right if `SYMLINK_DIRS` is set. Bug #36
addresses this.

1 files changed, 12 insertions, 2 deletions

diff --git a/bin/mkrc b/bin/mkrc
index c78d10b..f44cadb 100755
--- a/bin/mkrc
+++ b/bin/mkrc
@@ -40,8 +40,9 @@ verbosity=0
 in_host=0
 version=0
 always_copy=0
+force_symlink=0
 
-while getopts ChVvqot:d: opt; do
+while getopts ChSsVvqot:d: opt; do
   case "$opt" in
     C) always_copy=1 ;;
     h) show_help ;;
@@ -51,6 +52,8 @@ while getopts ChVvqot:d: opt; do
     o) in_host=1 ;;
     d) DOTFILES_DIR=$OPTARG ;;
     V) version=1 ;;
+    S) force_symlink=1 ;;
+    s) force_symlink=0 ;;
   esac
 done
 shift $(($OPTIND-1))
@@ -67,8 +70,15 @@ fi
 
 files=$@
 
+if [ $force_symlink -eq 1 ]; then
+  for file in $files; do
+    dedotted=`de_dot $file`
+    INSTALL="$INSTALL -S $dedotted"
+  done
+fi
+
 for file in $files; do
-  dotless=`echo $file | sed -e "s|$DEST_DIR/||" | sed -e 's/^\.//'`
+  dotless=`de_dot $file`
   dest=`destination $DOTFILES_DIR $dotless $in_host $tag`
   mkdir -p $dest/`dirname $dotless`
   $PRINT "Moving..."