Most/all esc_for_log instances in control.c should change.
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In the discussion on ticket #14555 (moved) and earlier on #4600 (moved), we realized that esc_for_log() should not be used for strings sent to the controller.
Unfortunately it is, so in b9302fb0aa2d5b635002bc5bf50219d42b90d9d7 and later I documented that.
But we should fix it instead.
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