Noticed a bug with the /bwrite feature of mIRC. When trying to /bwrite non-evaluated plain-text or a variable starting with the character "%", it will always evaluate it and treat it as a variable.
//bwrite file -1 -1 $(%0D%0A,0)
//var %x = % $+ 0D%0A | bwrite file -1 -1 %x
returns:
* /bwrite: invalid parameters
Note: Using version 6.2