Re: linum.el: problem (bug ?) fix and improvement

[Toru TSUNEYOSHI]

From: Stefan Monnier <address@hidden>
Subject: Re: linum.el: problem (bug ?) fix and improvement
Date: Thu, 12 May 2011 10:58:58 -0300
Message-ID: <address@hidden>

>> Additionally, I improved about invisible buffer string.
> 
>>     the attached file: "linum-mode.el.2.diff"
>>                        (including the above bug fix.)
> 
>>   (1) Indicating invisible line(s) by an underlined line number
>>       when the following line(s) is/are invisible.
> 
>>     ====================================================================
>>         _1_ abc                 <= underline
>>          3  ghi
>>          4  jkl
>>     ====================================================================
> 
>>   (2) Indicating partial invisible string by a `strike-through' line
>>       number when the line has partial invisible string.
> 
>>     ====================================================================
>>         _1_ abc
>>          3  ghi
>>          4  jkl
> 
>>       Make the 3rd line ("hi") invisible partially.
> 
>>         _1_ abc
>>         -3- g                   <= strike-through
>>          4  jkl
> 
>>       Make the 1st line ("ab") invisible partially.
> 
>>         -_1_- c                 <= underline and strike-through
>>          -3-  g
>>           4   jkl
>>     ====================================================================
> 
> Could you describe the context in which you've needed such a thing?
> The strike-through info seems to be redundant with the fact that the
> next line number is not the immediate successor, and I wonder when you'd
> be so interested in knowing if there's some hidden text on
> a particular line.
> 
> 
>         Stefan
> 

Thanks for your replying.

I have a case that I make unimportant text invisible temporarily, to
know only important information. However, I sometimes want to check the
unimportant (invisible) text. Then, the strike-through info tell me the
text place (by the line number).

    Example:
    ====================================================================
      In buffer (linum-mode is enabled).

        1 2000-01-01 abc
        2 2003-12-01 21:00:00 def
        3 2005-07-21 01:23:45 ghi
        4 2010-05-24 jkl
        5 2011-05-13 12:34:56 mno

      I want to know only the day and make the time invisible temporarily.

         1  2000-01-01 abc
        -2- 2003-12-01 def
        -3- 2005-07-21 ghi
         4  2010-05-24 jkl
        -5- 2011-05-13 mno

      (Now, I can know that 2nd, 3rd and 5th lines have the time by the
      strike-through info.)

      If I want to know the time of today, then I make the time visible.

         1  2000-01-01 abc
        -2- 2003-12-01 def
        -3- 2005-07-21 ghi
         4  2010-05-24 jkl
         5  2011-05-13 12:34:56 mno
      ====================================================================