Write help pages for LEFTB, LENB, MIDB and RIGHTB spreadsheet functions working on DBCS
Olivier Hallot committed a patch related to this issue.
It has been pushed to "master":
Fix fdo#80442, Calc DBCS functions
The patch should be included in the daily builds available at
http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
Affected users are encouraged to test the fix and report feedback.