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Commit65a69df

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Fix bogus affix-merging code.
NISortAffixes() compared successive compound affixes incorrectly,thus possibly failing to merge identical affixes, or (less likely)merging ones that shouldn't be merged. The user-visible effectsof this are unclear, to me anyway.Per bug #15150 from Alexander Lakhin. It's been broken for a long time,so back-patch to all supported branches.Arthur ZakirovDiscussion:https://postgr.es/m/152353327780.31225.13445405496721177988@wrigleys.postgresql.org
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‎src/backend/tsearch/spell.c

Lines changed: 4 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1963,16 +1963,18 @@ NISortAffixes(IspellDict *Conf)
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if ((Affix->flagflags&FF_COMPOUNDFLAG)&&Affix->replen>0&&
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isAffixInUse(Conf,Affix->flag))
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{
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boolissuffix= (Affix->type==FF_SUFFIX);
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if (ptr==Conf->CompoundAffix||
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ptr->issuffix!= (ptr-1)->issuffix||
1969+
issuffix!= (ptr-1)->issuffix||
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strbncmp((constunsignedchar*) (ptr-1)->affix,
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(constunsignedchar*)Affix->repl,
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(ptr-1)->len))
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{
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/* leave only unique and minimals suffixes */
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ptr->affix=Affix->repl;
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ptr->len=Affix->replen;
1975-
ptr->issuffix=(Affix->type==FF_SUFFIX);
1977+
ptr->issuffix=issuffix;
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ptr++;
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}
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}

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