Using jshell with the rxvt terminal emulator causes it to crash with an StringIndexOutOfBoundsException:

Exception in thread "main" java.io.IOError: java.lang.StringIndexOutOfBoundsException: String index out of range: 5
at jdk.internal.le/jdk.internal.org.jline.utils.Curses.tputs(Curses.java:62)
at jdk.internal.le/jdk.internal.org.jline.utils.Curses.tputs(Curses.java:45)
at jdk.internal.le/jdk.internal.org.jline.keymap.KeyMap.key(KeyMap.java:243)
at jdk.internal.le/jdk.internal.org.jline.reader.impl.LineReaderImpl.key(LineReaderImpl.java:6095)
at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at java.base/java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
at jdk.internal.le/jdk.internal.org.jline.reader.impl.LineReaderImpl.bindKeys(LineReaderImpl.java:6103)
at jdk.internal.le/jdk.internal.org.jline.reader.impl.LineReaderImpl.emacs(LineReaderImpl.java:5813)
at jdk.internal.le/jdk.internal.org.jline.reader.impl.LineReaderImpl.defaultKeyMaps(LineReaderImpl.java:5789)
at jdk.internal.le/jdk.internal.org.jline.reader.impl.LineReaderImpl.<init>(LineReaderImpl.java:293)
at jdk.jshell/jdk.internal.jshell.tool.ConsoleIOContext$1.<init>(ConsoleIOContext.java:122)
at jdk.jshell/jdk.internal.jshell.tool.ConsoleIOContext.<init>(ConsoleIOContext.java:122)
at jdk.jshell/jdk.internal.jshell.tool.JShellTool.start(JShellTool.java:970)
at jdk.jshell/jdk.internal.jshell.tool.JShellToolBuilder.start(JShellToolBuilder.java:254)
at jdk.jshell/jdk.internal.jshell.tool.JShellToolProvider.main(JShellToolProvider.java:120)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 5
at java.base/java.lang.StringLatin1.charAt(StringLatin1.java:47)
at java.base/java.lang.String.charAt(String.java:693)
at jdk.internal.le/jdk.internal.org.jline.utils.Curses.doTputs(Curses.java:359)
at jdk.internal.le/jdk.internal.org.jline.utils.Curses.tputs(Curses.java:60)
... 21 more

This is a know issue within Jline (https://github.com/jline/jline3/issues/533) and seems to be fixed in Jline 3.15.0 https://github.com/jline/jline3/issues/532.
We should consider upgrading Jline to fix this issue.

The same issue is noted on the Graal known issues (https://www.graalvm.org/release-notes/known-issues), but I couldn't find anything within the OpenJDK bug tracker.