Rule 5.1 and case-sensitive

[xiangke]

Have a short description in example section of Rule 5.1:
In the following non-compliant example, the implementation supports 6 significant case-insensitive characters in external identifiers. The identifiers in the two translation units are different but are not distinct in their significant characters.
/* file1.c */ int32_t abc = 0;
/* file2.c */ int32_t ABC = 0;

Have another description
In the following example, the definitions all occur in the same translation unit. The implementation in question supports 31 significant case-sensitive characters in external identifiers.
/* 1234567890123456789012345678901********* Characters */
int32_t engine_exhaust_gas_temperature_raw;
int32_t engine_exhaust_gas_temperature_scaled; /* Non-compliant */

Case-sensitive is mentioned here, I think it means that the following case is compliant
/* file1.c */ int32_t abc = 0;
/* file2.c */ int32_t ABC = 0;

is it inconsistent? case-sensitive is implemented or supported for this rule ?