Resolve calls to symlinked 'np'

src/np

@@ -1,4 +1,31 @@
 #!/usr/bin/env bash
 set -e
 
-exec "${BASH_SOURCE%/*}/np.sh" "$@"
+function crossplatformReadlink {
+	# http://stackoverflow.com/questions/1055671/how-can-i-get-the-behavior-of-gnus-readlink-f-on-a-mac
+	# http://stackoverflow.com/a/1116890
+	TARGET_FILE="$1"
+
+	cd `dirname $TARGET_FILE`
+	TARGET_FILE=`basename $TARGET_FILE`
+
+	# Iterate down a (possible) chain of symlinks
+	while [ -L "$TARGET_FILE" ]
+	do
+	    TARGET_FILE=`readlink $TARGET_FILE`
+	    cd `dirname $TARGET_FILE`
+	    TARGET_FILE=`basename $TARGET_FILE`
+	done
+
+	# Compute the canonicalized name by finding the physical path 
+	# for the directory we're in and appending the target file.
+	PHYS_DIR=`pwd -P`
+	RESULT=$PHYS_DIR/$TARGET_FILE
+	echo "$RESULT"
+}
+
+# Must be executed in this file.
+# Used to recursively call np and to find files to `source`.
+NP_SOURCE=$(crossplatformReadlink "$BASH_SOURCE")
+
+exec "${NP_SOURCE%/*}/np.sh" "$@"

src/np.sh

@@ -9,6 +9,14 @@ action=""
 
 executable="np-${action}.sh"
 
-[[ -z $(which "$executable") ]] && { echo -E "np: '${action}' is not a action." 1>&2; exit 1; }
+if [[ -z $(which "$executable") ]];
+then
+	executable="${BASH_SOURCE%/*}/${executable}"
 
-exec "$executable" "$@"
+	if [[ -z $(which "$executable") ]];
+	then
+		echo -E "np: '${action}' is not a action." 1>&2; exit 1;
+	fi
+fi
+
+exec "$executable" "$@"