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2.6.1 ¹Ô¤Î¥°¥ë¡¼¥×¤ò»ÈÍѤ·¤¿½ñ¼°

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diff \
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%<\end{em}
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   --new-group-format='\begin{bf}
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   old new

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   --new-group-format='\begin{bf}
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   --unchanged-group-format='%=' \
   --changed-group-format='\begin{em}
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   old new

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diff \
   --unchanged-group-format='' \
   --old-group-format='-------- %dn line%(n=1?:s) deleted at %df:
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   --new-group-format='-------- %dN line%(N=1?:s) added after %de:
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   --changed-group-format='-------- %dn line%(n=1?:s) changed at %df:
%<-------- to:
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   old new

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e

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f

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l

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m

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n

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E, F, L, M, N

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