SUMMARY

Regular expressions in Kate search are not optimized for non-Western languages (or even, any language that uses non-ASCII letters). 

For example, the /\w/ regex only matches ASCII letters (+ underscore), not all unicode letter characters as it does in most modern programming languages and editors. /\d/ likewise only covers ASCII digits, not digits in other scripts. This makes it exceedingly difficult to write a regex for languages with non-Latin script, or even languages like French that use a good number of non-ASCII characters. 

POSIX character classes are implemented but also only support ASCII characters. It would be great if Unicode classes/properties would be supported. 



STEPS TO REPRODUCE
1. write any text that contains non-ASCII letters, e.g., "café  القهوة"
2. try to match words using /\w+/

(obviously very simplistic example, but imagine writing any regex without being able to use \w, \d, or [a-zA-Z])

OBSERVED RESULT

only the letters `caf` are matched

EXPECTED RESULT

`café` and `القهوة` should be matched

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION