this applies to a few other strings of text, is intentional, and is documented in
versions.txt:
02/02/2000 - mIRC v5.7
[ ... ]
100. Changed parsing method for most identifiers so that your custom
identifiers will now work even if they begin with the same letters
as internal identifiers.
Directory related identifiers have not been updated, eg. $mircdir,
$getdir, $cd, etc. since many widely used scripts append text
directly to them, ie.:
//splay $file="Select wave:" $mircdirsounds\
Instead of using the (better) format:
//splay $file="Select wave:" $mircdir $+ sounds\
$cd is used in on SERV to return the currently selected directory, and appears in
/help $cd