Aryeh Gregor ha scritto:
On Wed, Jan 21, 2009 at 4:15 AM, Mikko Rantalainen
<mikko.rantalai...@peda.net> wrote:
If the browser does not know the language of the content, how on earth
is it supposed to *correctly* spellcheck it? I'm daily hitting a
situation where browser is trying to spellcheck content with incorrect
language. I've toggled such automatic spellchecker off and those will
stay off until correct language is detected.
In practice, I think the only way to avoid this problem is for
browsers to implement content-sniffing techniques of some kind to
figure out the language, at least per field but ideally on a
word-by-word basis. If the browser is set to spellcheck in English
but you start putting in lots of non-Latin characters and every word
is therefore misspelled, the browser should be clever enough to try
switching the spellcheck language, or at least disabling spellcheck
for words that can't possibly be from the language it's checking
against. More refined heuristics could detect even subtle
differences, like between British and American English, and remember
for next time which one the user usually types in.
Why not to let the user choose the language, as it happens in word
processors? A UA can't choose accurately whether, for instance, "color"
is a correct American English, a wrong British English, or even a
correct (truncated) Italian word, while a human can do it better, thus a
UA could provide an interface to change the language for a selection
spellchecking, or even for each mispelled word, starting from a hint
language, which could be the value of an element "lang" attribute
(beside a default value and a user-preference "forced" one - the latter
bypassing any authored value). Also, using the "lang" attribute value as
the start language to check (if not in contrast with a user preference)
would allow an interactive interface with a script changing that value
according to a user's choice (UAs could also expose a list of supported
languages).
A declaration such as "lang='und'" sounds like telling the user agent to
do whatever is computed as being a good choice, which is different from
telling "don't even try to understand what the language is here, because
I know you can't guess it"; declaring a value known to be unsupported
(such as an invented one) to turn off spellchecking sounds like a hack
needed because we miss a more appropriate feature.
Everything IMHO.
WBR, Alex
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