A DESCRIPTION OF THE PROBLEM :
After updating from JDK 11.0.8 to 11.0.9, JShell is printing out ANSI escape sequences when run from git-bash under Windows. (The problem does not occur when using Powershell or cmd.exe.) This is probably related to the update to JLine that occurred with this release.

REGRESSION : Last worked in version 11

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Start JShell in a git-bash window.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Expect to see the following output:

| Welcome to JShell -- Version 11.0.9
| For an introduction type: /help intro

jshell>
ACTUAL -
Actually see this output:

| Welcome to JShell -- Version 11.0.9
| For an introduction type: /help intro
←[?1h←=←[?2004h
jshell>

---------- BEGIN SOURCE ----------
(no source code necessary)
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Only workaround found so far is to use a different terminal. Note that this was not necessary with JDK 11.0.8 which did not have this problem.

FREQUENCY : always