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tr: fix "tr [=" case. Closes bug 4374.
function old new delta expand 1701 1738 +37 tr_main 472 474 +2
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@ -135,6 +135,8 @@ static unsigned int expand(const char *arg, char *buffer)
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/* "[xyz...", i=x, arg points to y */
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if (ENABLE_FEATURE_TR_EQUIV && i == '=') { /* [=CHAR=] */
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*buffer++ = *arg; /* copy CHAR */
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if (!*arg || arg[1] != '=' || arg[2] != ']')
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bb_show_usage();
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arg += 3; /* skip CHAR=] */
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continue;
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}
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