snippet builder fixes, closes #23

fmt.go

@@ -334,7 +334,7 @@ func (s *undefinedSnippet) Args() (ret string) {
 		}
 		last = arg
 	}
-	return strings.TrimRight(ret, ", ") + " " + last
+	return strings.TrimSpace(strings.TrimRight(ret, ", ") + " " + last)
 }
 
 func (f *basefmt) snippets() string {
@@ -346,7 +346,7 @@ func (f *basefmt) snippets() string {
 	var snips []*undefinedSnippet
 	// build snippets
 	for _, u := range f.undefined {
-		expr := snippetExprCleanup.ReplaceAllString(u.step.Text, "\\\\$1")
+		expr := snippetExprCleanup.ReplaceAllString(u.step.Text, "\\$1")
 		expr = snippetNumbers.ReplaceAllString(expr, "(\\d+)")
 		expr = snippetExprQuoted.ReplaceAllString(expr, " \"([^\"]*)\" ")
 		expr = "^" + strings.TrimSpace(expr) + "$"