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-rw-r--r--runtime/tools/blink.c24
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diff --git a/runtime/tools/blink.c b/runtime/tools/blink.c
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+++ b/runtime/tools/blink.c
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+/*
+ * An extremely simple program to make the cursor blink in an xterm.
+ * This is useful when the cursor is hard to spot in a highlighted file.
+ * Start in the background: "blink&" Stop by killing it.
+ * Bram Moolenaar 980109 (based on an idea from John Lange).
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+
+ int
+main(void)
+{
+ while (1)
+ {
+ printf("\e[?25h");
+ fflush(stdout);
+ usleep(400000); /* on time */
+ printf("\e[?25l");
+ fflush(stdout);
+ usleep(250000); /* off time */
+ }
+ return 0;
+}