On Wed, Jul 28, 2010 at 09:55:42AM -0400, Larry Kollar wrote: > 5 .if \n[NCS]&!\n[SIP] .nop NCS only. > 6 .if !\n[NCS]&\n[SIP] .nop SIP only. > 7 .if \n[NCS]&\n[SIP] .nop NCS and SIP. > 8 .if !\n[NCS]&!\n[SIP] .nop actually it isn't because nothing is > defined! > > Using parentheses doesn't change the results at all. Can anyone > suggest a fix or at least a workaround?
I remember reading (in the Bell Labs CSTR for troff) that ! only works at the beginning of an .if or .ie command. For example, set both NCS and SIP to 0, and you'll find that it prints "This is a test, SIP only." -- brian m. carlson / brian with sandals: Houston, Texas, US +1 832 623 2791 | http://www.crustytoothpaste.net/~bmc | My opinion only OpenPGP: RSA v4 4096b: 88AC E9B2 9196 305B A994 7552 F1BA 225C 0223 B187
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