On 31-Jul-2014 16:53:08 Werner LEMBERG wrote: > >> Is it possible to make .char \[-+] ... something that is part of >> the S font by default? > > No. However, it might be added to the constructed symbols provided > for -Tps (in file `tmac/ps.tmac', using `.fchar'). > > Werner
That is probably a good idea, since it is a symbol of general interest (even if not frequently occurring). However, for it to be appropriately available for equations, one also needs to have define -+ "\[-+]" say in file tmac/eqnrc. If tmac/eqnrc is read in before tmac/ps.tmac (which I'm not sure about) then one may get a "warning: can't find special character `-+'" since \[-+] is not yet defined; but it seems that this will not spoil the interpretation of "-+" within equations in the troff source file once tmac/ps.tmac has been read. As a bit of general advice, it can be very useful to create one's own special definitions. In my case this has involved extensive modifications of tmac/eqnrc, plus extra tmac files "tmac/tmac.ted" and "tmac/tmac.preted" which have a lot of stuff (and involve extra options "-mpreted -mted" in the command that calls troff. (I will spare the list the details of this lot ... ). Best wishes to all, Ted. ------------------------------------------------- E-Mail: (Ted Harding) <ted.hard...@wlandres.net> Date: 31-Jul-2014 Time: 18:47:42 This message was sent by XFMail -------------------------------------------------