Spinoff from SOLR-3862. If someone wants to pick it up, please do, create a patch and assign to me. See the discussion at SOLR-3862 for some things to bear in mind, especially the interface discussion.
add "remove" as update option for atomically removing a value from a multivalued field
Added removeregex atomic operation.
Works on single patterns or lists of patterns.
Regex patterns created before matching loop execution.
Commit 1633019 from Erick Erickson in branch 'dev/trunk'
[ https://svn.apache.org/r1633019 ]
SOLR-5992: add removeregex as an atomic update operation, Thanks Vitaliy
Committing. This version has CHANGES.txt entry, otherwise it's just what Vitaliy added. Thanks VItaliy!
Commit 1633024 from Erick Erickson in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1633024 ]
Bulk close after 5.0 release.