String compute functions do not make use of locale settings for case changing transformations, string comparisons, and number to string casting. Arrow does provides UTF-8 string kernels to handle localization standardization. It would be good to add locale support for string kernels that are affected by it.

The following are string functions that take a locale option as its second argument:

• str_to_lower
• str_to_upper
• str_to_title

Reporter: Eduardo Ponce / @edponce

Related issues:

• [C++] String algorithm library for StringArray/BinaryArray (is a child of)
• [R] String to_title, to_lower, to_upper kernels (relates to)

_{Note: This issue was originally created as ARROW-14126. Please see the migration documentation for further details.}