hyphenation problem with the character &

How to produce the hyphenation of the word (BM&FBOVESPA)

I tried to use `\hyphenation{BM\&F-BO-VES-PA}` in the preamble but did not work

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Are you using this "word" often? Otherwise a localized hyphenation would work: `BM\&F\-BO\-VES\-PA`. – Werner Oct 2 '12 at 13:44
Not only it doesn't work, but it raises an error: `! Not a letter`. In the context of `\hyphenation`, a letter is something that has nonzero `\lccode` (and category code 11 or 12, or is produced by `\char`, as is the case with `\&`). This is why David's solution works: it sets a nonzero `\lccode` for `\&`. – egreg Oct 2 '12 at 16:11

``````\documentclass{article}

\lccode`\&`\&
\righthyphenmin2
\hyphenation{BM\&F-BO-VES-PA}

\showhyphens{BM\&FBOVESPA}
\stop
``````

Shows that the hyphenation points are as requested:

``````[] \OT1/cmr/m/n/10 BM&F-BO-VES-PA
``````
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Are there any dangerous side effects of globally changing the `lccode` of `&` in a LaTeX document? – Martin Schröder Oct 4 '12 at 13:15
@MartinSchröder The main effect is that `foo&bar` would be considered as one word not two. the lccode doesn't for example affect the use of `&` in tables or in `\ifx` tests. – David Carlisle Oct 4 '12 at 15:25