regress/roff/cond/string.in

   1 .\" $OpenBSD: string.in,v 1.5 2022/06/03 11:50:25 schwarze Exp $
   2 .TH STRING 1 "June 3, 2022"
   3 .SH NAME
   4 string \- conditional testing whether a string is defined
   5 .SH DESCRIPTION
   6 .ie d mystr OOPS
   7 .el mystr not yet defined
   8 .br
   9 .ds mystr mystrval
  10 .ie d mystr now defined
  11 .el OOPS
  12 .if !d mystr OOPS
  13 .PP
  14 .ie d mymac OOPS
  15 .el mymac not yet defined
  16 .br
  17 .de mymac
  18 mymacval
  19 ..
  20 .ie dmymac now defined
  21 .el OOPS
  22 .if !d  mymac OOPS
  23 .PP
  24 .ie d myren OOPS
  25 .el myren not yet defined
  26 .br
  27 .rn SM myren
  28 .ie d myren now defined
  29 .el OOPS
  30 .if !d myren OOPS
  31 .PP
  32 standard macro is
  33 .ie d PP defined
  34 .el not defined \(em OOPS
  35 .PP
  36 identifier and tab:
  37 .ie d mystr     mystr is defined
  38 .el OOPS
  39 .PP
  40 escape sequence after identifier:
  41 .ie d mystr\(enmystr is defined
  42 .el OOPS
  43 .PP
  44 backslash in name:
  45 .ds \\ value
  46 .ie d \\ \e is defined
  47 .el OOPS
  48 .rm \\
  49 .if d \\ still defined!?
  50 .PP
  51 dot in name:
  52 .ds . value
  53 .ie d . \&. is defined
  54 .el OOPS
  55 .ie d \. \e. is defined
  56 .el OOPS
  57 .rm .
  58 .if d . still defined!?
  59 .PP
  60 invalid escape in name:
  61 .ds G value
  62 .ie d G G is defined
  63 .el OOPS
  64 .ie d \G \eG is defined
  65 .el OOPS
  66 .rm \G
  67 .if d G still defined!?