The Precise Pangolin has reached end of life, so this bug will not be
fixed for that release
** Changed in: software-center (Ubuntu Precise)
Status: Triaged => Won't Fix
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https://bugs.launchpad.net/bugs/744914
Title:
transliterate text/use collation before adding to xapian db and when
searching
Status in Ubuntu Translations:
New
Status in software-center package in Ubuntu:
Triaged
Status in software-center source package in Precise:
Won't Fix
Bug description:
Binary package hint: software-center
As of now software center uses str.lower() when searching in the
xapian db:
utils/query.py
22: s = search_term.lower()
33: query =
xapian.Query(str_to_prefix[search_prefix]+search_term.lower())
There are two problems with this:
* many languages have diacritic marks for characters but for fast typing
users usually write the base character: (in Romanian: ăâșțî and ĂÂȘȚÎ are
spelled AASTI by some users).
* characters in the Unicode set can appear in two forms: composed and
decomposed: the character U+00C7 (LATIN CAPITAL LETTER C WITH
CEDILLA) can also be expressed as the sequence U+0327 (COMBINING
CEDILLA) U+0043 (LATIN CAPITAL LETTER C).
To solve both problems both the text entered in the xapian db and the
user's text query must be normalized.
The search function in Chromium uses ICU rules to achieve this:
- http://code.google.com/p/chromium/issues/detail?id=1100
-
http://www.google.com/codesearch/p?hl=en#OAMlx_jo-ck/src/third_party/WebKit/Source/WebCore/editing/TextIterator.cpp&q=file:TextIterator.cpp&l=1882
There is a python-icu library that could help achieve this. See for
example http://lists.osafoundation.org/pipermail/pyicu-
dev/2010-October/000214.html
Or one could just remove the diacritical marks from the string
altogether: http://stackoverflow.com/questions/517923/what-is-the-
best-way-to-remove-accents-in-a-python-unicode-string
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