Print a heading padded with equals signs above and below

print-padded-heading.sh

#!/usr/bin/env bash

# Usage:
#     print-padded-heading Some Heading
#
# Outputs:
# ==============
#  Some Heading 
# ==============

# sed explination:
  # h; copy pattern to hold space
  # s; replace any pattern char with =
  # p; print pattern (now all =)
  # H; append pattern to hold
  # x; swap pattern and hold
  # sed then auto prints the pattern again.

# To indent the heading, pad the echo as desired

print-padded-heading() {    
	echo " $* " | sed 'h; s/./=/g; p; H; x'
}