Change dam(1df) to a sed script

3 files changed, 11 insertions, 27 deletions

diff --git a/bin/dam.sed b/bin/dam.sed
new file mode 100644
index 00000000..86fb03f9
--- /dev/null
+++ b/bin/dam.sed
@@ -0,0 +1,8 @@
+# Store up all input before emitting it unchanged as output
+1h
+1!H
+$ {
+    g
+    p
+}
+d
diff --git a/bin/dam.sh b/bin/dam.sh
deleted file mode 100644
index a80cae4a..00000000
--- a/bin/dam.sh
+++ /dev/null
@@ -1,25 +0,0 @@
-# Store up all input before emitting it unchanged as output
-self=dam
-
-# Create a temporary directory with name in $td, and handle POSIX-ish traps to
-# remove it when the script exits.
-td=
-cleanup() {
-    [ -n "$td" ] && rm -fr -- "$td"
-    if [ "$1" != EXIT ] ; then
-        trap - "$1"
-        kill "-$1" "$$"
-    fi
-}
-for sig in EXIT HUP INT TERM ; do
-    # shellcheck disable=SC2064
-    trap "cleanup $sig" "$sig"
-done
-td=$(mktd "$self") || exit
-
-# We'll operate on stdin in the temp directory; write the script's stdin to it
-# with cat(1)
-cat -- "${@:--}" >"$td"/stdin
-
-# Only when that write is finished do we finally spit it all back out again
-cat -- "$td"/stdin
diff --git a/man/man1/dam.1df b/man/man1/dam.1df
index b9821960..78f5210c 100644
--- a/man/man1/dam.1df
+++ b/man/man1/dam.1df
@@ -9,7 +9,8 @@ dam
 | prog2
 .SH DESCRIPTION
 .B dam
-stores all its input in a temporary file before emitting it as output, behaving
-like a fully-buffered cat(1), and with some of the functionality of sponge(1).
+buffers all its input before emitting it as output. Useful if you don't
+actually want a line-by-line flow between programs, such as pasting a complete
+document into a sed(1) pipeline on the terminal.
 .SH AUTHOR
 Tom Ryder <tom@sanctum.geek.nz>