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Anonymous 1499
With `\hyphenation` I can give custom hyphenation patterns for a document. But what happens if I have a preamble with multiple calls, like this:


Would both `pat-tern` and `hy-phe-na-tion` be added to the custom hyphenations? 

Also, in case of conflicting assignments, e.g.


will the last one win, or the first? 
Top Answer
You can use `\showhyphens` to check this yourself. With the following code:


% the following hyphenation points are deliberately wrong to show the change compared to the default patterns





you can find the patterns in the log file:

Underfull \hbox (badness 10000) in paragraph at lines 11--11
[] \OT1/cmr/m/n/10 patt-ern

\hbox(6.15079+1.94444)x16383.99998, glue set 9800.10976 []

Underfull \hbox (badness 10000) in paragraph at lines 12--12
[] \OT1/cmr/m/n/10 hyphe-nation

\hbox(6.94444+1.94444)x16383.99998, glue set 9787.12631 []

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