[CASSANDRA-3597] cqlsh: use libedit when readline isn't available, if possible

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 1.2.0 beta 2
• Component/s: Legacy/Tools
• Labels: cqlsh

Environment

Cqlsh, run under a Mac OS X-bundled Python installation (also possibly some types of BSD installation).

• Assignee: Aleksey Yeschenko
• Reporter: paul cannon

Authors

Aleksey Yeschenko

Reviewers

Brandon Williams

• Created: 08/Dec/11 21:14
• Updated: 16/Apr/19 09:32
• Resolved: 15/Oct/12 17:32

Description

Cqlsh provides context-sensitive tab-completion functionality, but it's only available when the readline library is available, and this is not the case where readline's GPL license proves problematic. libedit is a common replacement, which would be available to Mac OS X-bundled Python users, and the Python readline module makes libedit almost a drop-in replacement.

If possible, fallback to libedit functionality when providing tab completion.