Elegantly remove a directory from $PATH in Bash shell

removeFromPath() {
  local p d
  p=":$1:"
  d=":$PATH:"
  d=${d//$p/:}
  d=${d/#:/}
  PATH=${d/%:/}
}

Features:

• is pure Bash,
• does not invoke other processes (like 'sed' or 'awk'),
• does not change IFS,
• does not fork a sub-shell,
• handles paths with spaces, and
• removes all occurrences of the argument in PATH.