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Old 04-08-2010, 11:18 AM   #1
banjomike
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Is there a regex that will select books with an empty comments field?

I'm going through the process of adding detailed comments to books and I just what to see which ones are left.
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Old 04-08-2010, 11:31 AM   #2
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Try comment:false in the search field. That works for covers ...

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Old 04-08-2010, 11:32 AM   #3
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Originally Posted by banjomike View Post
Is there a regex that will select books with an empty comments field?

I'm going through the process of adding detailed comments to books and I just what to see which ones are left.
In the (normal) search box: comments:false
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Old 04-08-2010, 11:47 AM   #4
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Originally Posted by theducks View Post
In the (normal) search box: comments:false
Make sure your version is one of the last 2-3 or so. There was a bug in the code and prior to that the "false" searches only found the first entry. (Possibly "not comments:true" would have worked for older versions.)
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Old 04-08-2010, 12:12 PM   #5
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Make sure your version is one of the last 2-3 or so. There was a bug in the code and prior to that the "false" searches only found the first entry. (Possibly "not comments:true" would have worked for older versions.)
"not comments:true", works, thanks. (using 0.6.46)



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Originally Posted by theducks View Post
In the (normal) search box: comments:false
That mostly works although it also picks up comments with the word "false" in them. Seems like a combined logic AND text search.

Last edited by banjomike; 04-08-2010 at 12:15 PM.
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Old 04-08-2010, 12:16 PM   #6
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That mostly works although it also picks up comments with the word "false" in them.
Thanks for responding. I saw this error a while back, meant to think about the solution, then forgot about it.
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Old 04-08-2010, 01:10 PM   #7
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Quote:
Originally Posted by banjomike View Post
That mostly works although it also picks up comments with the word "false" in them. Seems like a combined logic AND text search.
That is indeed what the code does, and it is a bug. I probably broke it, and I will definitely fix it.

BTW: not comments:true does work correctly.

BTW**2: The regexp comments:~^$ should in theory match an empty comment. However, empty comments are represented as missing text, not text containing no characters, so no regexp (or any other match) is tested. I could make a special case of this pattern, if the general consensus is that it really should work.
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Old 04-08-2010, 02:18 PM   #8
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Originally Posted by chaley View Post
That is indeed what the code does, and it is a bug. I probably broke it, and I will definitely fix it.
I spotted the previous bug in the false searches, and while looking for it, I became somewhat familiar with the search code. Later I encountered the bug that "comments:false" found comments that have the word "false" in them, and I remember I was sort of puzzled as I had vaguely recalled the code and thought that this shouldn't have happened. I realize now you must have changed the code.

Quote:
BTW: not comments:true does work correctly.
Actually, when I suggested that, it was because I remembered the old code had first identified "false" searches, then went on to process non-false searches differently. It's nice to know that it works, but I suspect you will fix the code pretty quickly

Quote:
BTW**2: The regexp comments:~^$ should in theory match an empty comment. However, empty comments are represented as missing text, not text containing no characters, so no regexp (or any other match) is tested. I could make a special case of this pattern, if the general consensus is that it really should work.
When I spotted the new bug in the false search (locates comments with "false" in the text), the first thing I did was try a regexp search. I suppose if you are in the code again, you might as well add that, as I can imagine people doing that search if they know regex, but not about true/false searches.
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