Adds ability for the interpreter to read from stdin pipes via -run

README.md

@@ -741,6 +741,12 @@ slope -run "(display (+ 1 3))"
 
 You may, of course, replace the contents between the quotes with your own one liner. In general all features of slope are available from a one liner, including loading modules.
 
+You may also leverage `-run` to create pipelines. By passing `--` to `-run` slope will read from `stdin` until `EOF`:
+
+``` sh
+cat myfile.slo myotherfile.slo | slope -run -- | less
+```
+
 You can, at your option, use the `-L` flag to preload the environment with your [preload](#preload) content.
 
 

interpreter.go

@@ -446,7 +446,6 @@ func apply(procedure expression, args []expression) (value expression) {
 		en := &env{make(vars), p.en}
 		switch params := p.params.(type) {
 		case []expression:
-			fmt.Println(p)
 			if variadic(params) > len(args) {
 				return exception(fmt.Sprintf("Lambda expected %d arguments but received %d", len(params), len(args)))
 			}

main.go

@@ -16,7 +16,7 @@ import (
 	ln "github.com/peterh/liner"
 )
 
-const version = "0.7.0"
+const version = "0.7.3"
 
 const globalLibPath = "/usr/local/lib/slope/modules/"
 
@@ -324,7 +324,16 @@ func main() {
 		if *preloadEnv {
 			preloadFiles()
 		}
-		RunCommand(*runCommand)
+		if *runCommand == "--" {
+			b, err := ioutil.ReadAll(os.Stdin)
+			if err != nil {
+				fmt.Fprintf(os.Stderr, "Could not read from stdin")
+				SafeExit(1)
+			}
+			RunCommand(string(b))
+		} else {
+			RunCommand(*runCommand)
+		}
 	} else if len(args) > 0 {
 		if *preloadEnv {
 			preloadFiles()

slope.1

@@ -25,7 +25,7 @@ Prints the version information and exits.
 .TP
 .B
 \fB-run [program]\fP
-Runs the given program, passed in as a quoted string, and exits, printing any output as directed by the given program.
+Runs the given program, passed in as a quoted string, and exits, printing any output as directed by the given program. If \fI--\fP is given as an argument to \fB-run\fP slope will read from stdin until EOF.
 .TP
 .B
 \fB-L\fP