https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=298983
Bug ID: 298983
Summary: localedef(1) merges non-contiguous source characters
into one maplower/ mapupper range
Product: Base System
Version: Unspecified
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: [email protected]
Reporter: [email protected]
Created attachment 275250
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=275250&action=edit
patches the issue described
localedef(1) merges non-contiguous source characters into one maplower/
mapupper range, giving wrong case mappings.
A range is looked up as target = map + c - min, so source and target must
both be contiguous. The merge test only checks the target:
} else if ((last_lo != NULL) &&
(last_lo->tolower + 1 == ctn->tolower)) {
So a gap in the source merges entries with different deltas. Greek
U+0387/U+038B/U+038D are not mapped, so U+0386..U+038A becomes one range:
0x0386..0x038A -> 0x03AC..0x03B0 (should end at 0x03AF)
towlower(0x038A) gives 0x03B0 instead of 0x03AF. Same for U+0388, U+0389,
U+038E, U+038F.
Fix: require the source to be contiguous too (last_lo->wc + 1 == wc), like
the runetype range above. Same for toupper.
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