fix: Disable grapheme cluster probe on LineDisciplineTerminal#1709
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fix: Disable grapheme cluster probe on LineDisciplineTerminal#1709
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ExternalTerminal has no real terminal emulator on the other end, so the DECRQM mode 2027 probe should not be sent. The probe would either consume actual input data from the pipe (causing readLine() to hang) or leak the escape sequence into the output stream (corrupting downstream consumers). This fixes two issues: - LineReaderTest hanging when the terminal type starts with "xterm" because the probe consumes input meant for readLine() - Maven embedded executor tests failing on Windows because the probe escape sequence [?2027$p contaminates captured output paths
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Summary
supportsGraphemeClusterMode()inLineDisciplineTerminalto returnfalse, preventing the DECRQM mode 2027 probe from being sent on terminals with no real terminal emulatorFixes #1707
LineDisciplineTerminal(and subclassesExternalTerminal,SwingTerminal,WebTerminal) have no real terminal emulator on the other end, so the DECRQM probe either:readLine()to hang forever (the LineReaderTest hang #1707 issue)[?2027$pinto the output stream, corrupting downstream consumers (the Maven CI failure)Test plan
LineReaderTestnow passes (was hanging due to probe consuming piped input)@Disabledtests)