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-rw-r--r--generic/tclIO.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/generic/tclIO.h b/generic/tclIO.h
index b799375..f7ce677 100644
--- a/generic/tclIO.h
+++ b/generic/tclIO.h
@@ -282,6 +282,8 @@ typedef struct ChannelState {
#define CHANNEL_CLOSEDWRITE (1<<21) /* Channel write side has been closed.
* No further Tcl-level write IO on
* the channel is allowed. */
+#define CHANNEL_EXIT_ON_EPIPE (1<<22) /* Exit on EPIPE (broken pipe) error
+ * on the stdout channel. */
/*
* The length of time to wait between synthetic timer events. Must be zero or