Sorting names with polish character - bug

SnakeMM · 02-27-2010, 05:19 AM

I have discovered today that authors with names started with polish characters ie.: Ł are sorted after authors with names starting with "Z".

Has someone any solution for this problem ?

Cheers

moriakaice · 02-27-2010, 05:29 AM

It's a common problem and a way most software sorts it - I'd say it's because of the Unicode character codes, where 'z' has a lower code than 'ł' ('z' is 007A, 'ł' is 0142 [both are hex] -- or 122 vs. 322).

HarryT · 02-27-2010, 07:03 AM

Trouble is, there's no one sorting order that works for all languages. You really need to be able to specify a language, and then define sorting rules for that language.

Krystian Galaj · 02-27-2010, 07:14 AM

Yup, in Polish it's supposed to be right after 'L', like 'Ą' is after 'A' and 'Ę' after 'E'... I wonder if there are two languages where the same two characters are put in different order, or if there could be one order that fits all languages (after filling in all non-Ascii characters).

moriakaice · 02-27-2010, 08:19 AM

Quote:

Originally Posted by Krystian Galaj

or if there could be one order that fits all languages (after filling in all non-Ascii characters).

I guess that could be done by changing the non-ASCII characters to their ASCII counterparts, like changing "Ł" to "L". If we gave them some "priority", we could have it sorted with "Ł" going with other "L"'s, but then, since we've converted it from non-ASCII, move it after the last "L". Or even get all the non-ASCII, sort them, then add them to the sorted list of those ASCII-only after the ASCII character counterpart.

kovidgoyal · 02-27-2010, 11:49 AM

At some point the calibre database will get support for defining book language and then there could conceivably be language dependent sorting, but it will be a while.

02-27-2010, 05:19 AM	#1
SnakeMM Member Posts: 21 Karma: 10 Join Date: Feb 2010 Device: HTC Magic	Sorting names with polish character - bug I have discovered today that authors with names started with polish characters ie.: Ł are sorted after authors with names starting with "Z". Has someone any solution for this problem ? Cheers

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02-27-2010, 05:29 AM	#2
moriakaice Memento Mori Posts: 36 Karma: 10 Join Date: Apr 2007 Device: eClicto, iPad WiFi, Kindle 3 WiFi	It's a common problem and a way most software sorts it - I'd say it's because of the Unicode character codes, where 'z' has a lower code than 'ł' ('z' is 007A, 'ł' is 0142 [both are hex] -- or 122 vs. 322).

02-27-2010, 07:03 AM	#3
HarryT eBook Enthusiast Posts: 85,544 Karma: 93383099 Join Date: Nov 2006 Location: UK Device: Kindle Oasis 2, iPad Pro 10.5", iPhone 6	Trouble is, there's no one sorting order that works for all languages. You really need to be able to specify a language, and then define sorting rules for that language.

02-27-2010, 07:14 AM	#4
Krystian Galaj Guru Posts: 820 Karma: 11012 Join Date: Nov 2007 Location: Warsaw, Poland Device: Bookeen Cybook	Yup, in Polish it's supposed to be right after 'L', like 'Ą' is after 'A' and 'Ę' after 'E'... I wonder if there are two languages where the same two characters are put in different order, or if there could be one order that fits all languages (after filling in all non-Ascii characters).

02-27-2010, 11:49 AM	#6
kovidgoyal creator of calibre Posts: 45,188 Karma: 27110894 Join Date: Oct 2006 Location: Mumbai, India Device: Various	At some point the calibre database will get support for defining book language and then there could conceivably be language dependent sorting, but it will be a while.

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