1 files changed, 18 insertions, 0 deletions
diff --git a/unix/boot/spp/rpp/rpprat/putbak.r b/unix/boot/spp/rpp/rpprat/putbak.r
new file mode 100644
index 00000000..b88a3f11
--- /dev/null
+++ b/unix/boot/spp/rpp/rpprat/putbak.r
@@ -0,0 +1,18 @@
+#-h-  putbak			  254  local   12/01/80  15:54:34
+# putbak - push character back onto input
+   include  defs
+
+   subroutine putbak (c)
+   character c
+
+   include COMMON_BLOCKS
+
+   if (bp <= 1)
+      call baderr ("too many characters pushed back.")
+   else {
+      bp = bp - 1
+      buf (bp) = c
+      }
+
+   return
+   end