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Text File  |  1992-02-19  |  227 b   |  8 lines
  1. dnl "m4.texinfo": 744: Origin here
  2. ifdef(`foo', ``foo' is defined', ``foo' is not defined')
  3. dnl =>foo is not defined
  4. define(`foo', `')
  5. dnl =>
  6. ifdef(`foo', ``foo' is defined', ``foo' is not defined')
  7. dnl =>foo is defined
  8.