repl: fix pasting after moving the cursor to the left #341

Job	Run time
Build slim tarball	1m 53s
aarch64-linux: with shared libraries	32m 7s
x86_64-darwin: with shared libraries	1h 4m 24s
aarch64-darwin: with shared libraries	38m 53s
x86_64-linux: with shared libraries	38m 36s
	2h 55m 53s

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