kpathsea: KPSE_DOT expansion

 
 5.3.5 'KPSE_DOT' expansion
 --------------------------
 
 When 'KPSE_DOT' is defined in the environment, it names a directory that
 should be considered the current directory for the purpose of looking up
 files in the search paths.  This feature is needed by the 'mktex...'
 scripts Seemktex scripts, because these change the working
 directory.  You should not ever define it yourself.