print statement should allow for escaping stuff

ast/print.go

@@ -18,6 +18,7 @@
 package ast
 
 import (
+    "fmt"
     "strings"
 )
 
@@ -49,7 +50,7 @@ loop:
         constructor.WriteString(iter.FmtToken())
     }
 
-    println(constructor.String())
+    fmt.Printf(constructor.String() + "\n")
     goto loop
 }
 

cmd/shs.go

@@ -31,6 +31,22 @@ const (
     def_prompt  string = "λ "
 )
 
+
+// useful for when input contains escape sequences
+// not checking delims cause thats up to the user who defines their prompts
+func parseString(in string) string {
+    in = "\"" + in + "\""
+    out, err := strconv.Unquote(in)
+    if err != nil {
+        log.Log(log.ERR,
+            "Couldnt parse (pre?)prompt",
+            "init")
+        return ""
+    }
+
+    return out
+}
+
 func setLogLvl(vars ast.VarTable) {
     var loglvl string
 
@@ -80,7 +96,7 @@ func main() {
 
     prompt_t := ast.GetVar("SHS_STATIC_PROMPT", vars)
     if prompt_t != nil {
-        prompt = prompt_t.Value()
+        prompt = parseString(prompt_t.Value())
     } else {
         prompt = def_prompt
     }
@@ -110,7 +126,7 @@ func main() {
         if dyn_prompt != nil {
             p_tok := dyn_prompt.CallFunction(nil, vars, funcs)
             if p_tok != nil && p_tok.Tag == ast.STRING {
-                prePrompt = p_tok.Value()
+                prePrompt = parseString(p_tok.Value())
             }
         }
 

stdlib/string.go

@@ -19,6 +19,7 @@ package stdlib
 
 import (
     "fmt"
+    "strconv"
     "gitlab.com/whom/shs/ast"
     "gitlab.com/whom/shs/log"
 )
@@ -43,6 +44,19 @@ func concat(in *ast.Token, vt ast.VarTable, ft ast.FuncTable) *ast.Token {
 }
 
 func print_str(in *ast.Token, vt ast.VarTable, ft ast.FuncTable) *ast.Token {
-    fmt.Println(in.Eval(ft, vt, false))
+    body := in.Eval(ft, vt, false).String()
+    if body[0] != body[len(body)-1] && body[0] != '"' {
+        body = "`" + body + "`"
+    }
+
+    text, err := strconv.Unquote(body)
+    if err != nil {
+        log.Log(log.ERR,
+            "error unquoting string",
+            "print")
+        return nil
+    }
+
+    fmt.Printf(text + "\n")
     return nil
 }