Add 'nlfor()' for most common tr syntax ("something to newline')

dotfiles/bash/main.bashrc

@@ -194,6 +194,26 @@ fixnl() {
     rm "$cache"
 }
 
+nlfor() {
+    #
+    # Replace $1 with newlines and fix final newline
+    #
+    # Shorthand for commonly used tr syntax.  Example:
+    #
+    #     $ echo "$PATH" | nlat :
+    #     /foo
+    #     /bar
+    #     $
+    #
+    # is almost like `tr -n :` except that it is a bit easier
+    # to type and fixes the annoying problem with missing
+    # newline at the end of the replaced string.
+    #
+    local char=$1
+    tr "$char" '\n' \
+      | fixnl
+}
+
 xop() {
     #
     # Common clipboard operations with fixnl() on top