lldb build does not use libedit/readline for interface

[Nelson Elhage]

After installing `lldb-4.0`, if I start lldb, I get a vanilla console input line, and not a libedit/libreadline interface. Tab completion, arrow keys, history, etc are all missing.

Curiously, on Ubuntu 16.04 Precise, lldb-3.8 exhibits proper command-line editing but `lldb-4.0` does not; On 17.04 Zesty, neither package does. I have not attempted to further root-cause the discrepancy.

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: lldb-4.0 1:4.0-1ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-38.42-generic 4.10.17
Uname: Linux 4.10.0-38-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.5
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Tue Oct 24 18:36:54 2017
InstallationDate: Installed on 2016-03-29 (574 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160323)
SourcePackage: llvm-toolchain-4.0
UpgradeStatus: Upgraded to zesty on 2017-10-19 (5 days ago)

[Mary Marchini (mmarchini)]

This problem still affects Xenial and Zesty. Are there any plans on backporting the fix?

[Peter Hull (peterhull90)]

Also affects Artful,
Linux peter 4.13.0-17-generic #20-Ubuntu SMP Mon Nov 6 10:04:08 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Distributor ID: Ubuntu
Description: Ubuntu 17.10
Release: 17.10
Codename: artful

[Kasper (kbonne-v)]

I would also like to see this fix pushed out soon. I'm on Artful. Is there an ETA?