Posted to tcl by kbk at Thu Apr 15 10:56:39 GMT 2010view pretty
proc backslashify { string } { set retval {} foreach char [split $string {}] { scan $char %c ccode if { $ccode >= 0x0020 && $ccode < 0x007f && $char ne "\{" && $char ne "\}" && $char ne "\[" && $char ne "\]" && $char ne "\\" && $char ne "\$" } { append retval $char } else { append retval \\u [format %04x $ccode] } } return $retval }