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Annotation of 43BSD/usr.lib/learn/editor/L37.2e, revision 1.1

1.1     ! root        1: #print
        !             2: Here is something a bit trickier.  We want to add
        !             3: an extra space after each word "lengthen".  However,
        !             4: some of the instances of "lengthen" are followed
        !             5: by commas or right parentheses and we want the space
        !             6: after the comma or right parenthesis in that case.  That
        !             7: is, the desired transformations are:
        !             8:    now              new
        !             9: lengthen xx      lengthen  xx
        !            10: lengthen, xx     lengthen,  xx
        !            11: lengthen) xx     lengthen)  xx
        !            12: lengthen), xx    lengthen),  xx
        !            13: It should only take one substitute command to do this.
        !            14: Remember that "*" matches zero or more instances of
        !            15: whatever precedes it.
        !            16: Try those changes on the first six lines of the file
        !            17: "text" in this directory.  Then rewrite the file and
        !            18: type "ready".
        !            19: #create Ref
        !            20: To lengthen  this is easy,
        !            21: whereas to lengthen,  rather
        !            22: than to shorten, on the previous line
        !            23: is hard.  (To lengthen)  is an
        !            24: infinitive.  I said to him, (please lengthen),  and
        !            25: he did so.
        !            26: Why not lengthen this word?  Notice it is on line 7.
        !            27: #create text
        !            28: To lengthen this is easy,
        !            29: whereas to lengthen, rather
        !            30: than to shorten, on the previous line
        !            31: is hard.  (To lengthen) is an
        !            32: infinitive.  I said to him, (please lengthen), and
        !            33: he did so.
        !            34: Why not lengthen this word?  Notice it is on line 7.
        !            35: #user
        !            36: #cmp text Ref
        !            37: #log
        !            38: #next
        !            39: 37.2f 5

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