For some reason, iso_name values shorter than the maximum of five characters (excluding the terminating null) were "propped up" using an explicit embedded \0 and two spaces. This is weird, because it's extra work compared to the default of just writing the shorter string literal and letting the compiler fill the rest with null characters. It also prevents use of memcmp() in lieu of strcmp(), because while the spaces following \0 are "invisible" to strcmp(), they'd be visible to memcmp(). Change such entries to use the shorter canonical form. This enables the use of memcmp() instead of strcmp(), because both buffers (the one in the table, and qt_inIsoNametoLCID()::n) are now zero-extended (the former by the compiler and the latter by strncpy()). Even if we compare strictly more characters now (strcmp() would have stopped at the first embedded null, memcmp() keeps going), the small size of the buffers and the constant length of the range make this potentially much faster. Amends the start of the public history (for the format of the table). Pick-to: 6.10 6.9 6.8 6.5 Change-Id: Id760fba81f28710f0ee19a303426f3706c00dad6 Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>