Case insensitive regex for non-ASCII strings does not work?

问题

With Neo4j 2.1.0-M01, I just discovered that case insensitive regex match does not work with Ukrainian words, at list from web-interface browser. Say I have node with a word 'Ліга' somewhere.

MATCH (n) WHERE n.payload =~ '(?i).*ліга.*' does not match

MATCH (n) WHERE n.payload =~ '(?i).*лІГа.*' does not match

MATCH (n) WHERE n.payload =~ '(?i).*Ліга.*' match Ok

Do I need some deep magic to get it working as expected? Thanks in advance!

WBR, Andrii

回答1:

Not 100% sure, but could you please check if using (?u) helps:

MATCH (n) WHERE n.payload =~ '(?iu).*лІГа.*'

This tells the regex to work case insensitive based on unicode and not on ASCII only.

来源：https://stackoverflow.com/questions/23371028/case-insensitive-regex-for-non-ascii-strings-does-not-work