read from stdin if the file name is -

Makefile

@@ -31,9 +31,10 @@ install: all
 		cat LICENSE; \
 	) >>$(mandir)/man1/shsub.1
 	@echo generate "`echo $(bindir)/shsub`"
-	@>$(bindir)/shsub
-	@>>$(bindir)/shsub echo '#!/bin/sh'
-	@>>$(bindir)/shsub echo exec `echo $(libdir)/shsub/cli` '"$$@"'
+	@( \
+		echo '#!/bin/sh'; \
+		echo exec `echo $(libdir)/shsub/cli` '"$$@"'; \
+	) >$(bindir)/shsub
 	@chmod 755 $(bindir)/shsub
 
 test: all

cli.sh

@@ -51,9 +51,13 @@ trap '[ -f "$script" ] && rm "$script"' EXIT
 trap 'exit 1' TERM INT HUP
 if [ $# -gt 0 ]; then
 	printf '%s\n' progname="`shesc "$1"`" >>"$script"
-	<"$1" preproc | "$tc" >>"$script"
+	if [ "$1" = - ]; then
+		preproc | "$tc" >>"$script"
+	else
+		<"$1" preproc | "$tc" >>"$script"
+	fi
 	shift
 else
 	preproc | "$tc" >>"$script"
 fi
-$sh "$script" "$@"
+"$sh" "$script" "$@"

shsub.1

@@ -7,11 +7,11 @@ and execute it
 
 .SH SYNOPSIS
 
-\fBshsub\fR [\fIoptions\fR] [\fIfile\fR\]
+\fBshsub\fR [\fIoptions\fR] [\fIfile\fR\] [\fIargument\fR ...]
 
 .PP
 \fBshsub\fR reads the shell template from \fIfile\fR.
-If \fIfile\fR is omitted, \fBshsub\fR reads from stdin.
+If \fIfile\fR is \fB-\fR or omitted, \fBshsub\fR reads from stdin.
 
 .SH DESCRIPTION
 
@@ -49,17 +49,16 @@ This is for the convenience of making executable shell templates.
 
 .SH READING INPUT
 
-When the template is stdin,
-no argument will be passed to the template
-and \fB$0\fR could be any value.
-If the template contains commands reading stdin,
-e.g. \fBread\fR(1), the behavior is unspecific.
-
-When the template is a named file,
-all arguments after the file name are passed to the template,
-and \fB$progname\fR is set to the template name.
-The template can safely read stdin.
-However, \fB$0\fR could still be any value.
+Arguments are passed to the compiled script,
+but \fB$0\fR could be any value.
+
+The shell variable \fB$progname\fR is
+set to \fB-\fR if the template is read from stdin.
+Otherwise it's set to the template name.
+
+If the template is read from stdin
+and the the template itself reads stdin,
+the behavior is unspecific.
 
 .SH OPTIONS
 

test/19/in

@@ -0,0 +1,6 @@
+#!/usr/bin/env shsub
+We've learnt from <%=$progname%>:
+
+<% for i in "$@"; do -%>
+- <%= $i %>
+<% done -%>

test/19/out

@@ -0,0 +1,5 @@
+We've learnt from -:
+
+- let the machine do the work
+- let other people do the work
+- do the job in stages

test/19/run

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+<in shsub -\
+	"let the machine do the work" \
+	"let other people do the work" \
+	"do the job in stages" \
+	>progout
+diff out progout

version

@@ -1 +1 @@
-1.4.0-dev
+1.4.0