fix: exclude syslog for windows, nacl, and plan9.

.travis.yml

@@ -36,7 +36,7 @@ before_script:
 script:
   - make check
   - go build -v ./...
-  - GO111MODULE=off go test -v ./...
+  - make tests
 
 deploy:
   - provider: script

Makefile

@@ -16,4 +16,7 @@ cmd/goexports/goexports: cmd/goexports/goexports.go
 generate: gen_all_syscall
 	go generate
 
+tests:
+	GO111MODULE=off go test -v ./...
+
 .PHONY: check gen_all_syscall gen_tests

README.md

@@ -16,6 +16,7 @@ It powers executable Go scripts and plugins, in embedded interpreters or interac
 * works everywhere Go works
 * All Go & runtime resources accessible from script (with control)
 * Security: `unsafe` and `syscall` packages not used or exported by default
+* Support Go 1.11 and Go 1.12 (the latest 2 major releases)
 
 ## Install
 
@@ -28,9 +29,12 @@ import "github.com/containous/yaegi/interp"
 ### REPL
 
 ```bash
-go get -u github.com/containous/yaegi/cmd
+go get -u github.com/containous/yaegi/cmd/yaegi
 ```
 
+Note that you can use [rlwrap](https://github.com/hanslub42/rlwrap) (install with your favorite package manager),
+and alias the `yaegi` command in `alias yaegi='rlwrap yaegi'` in your `~/.bashrc`, to have history and command line edition.
+
 ## Usage
 
 ### As a command line interpreter

_test/assign8.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	_ = 1
+	println(1)
+}
+
+// Output:
+// 1

cmd/goexports/goexports.go

@@ -22,8 +22,8 @@ import (
 	"text/template"
 )
 
-const model = `// +build {{.CurrentGoVersion}},!{{.NextGoVersion}}
- 
+const model = `// +build {{.CurrentGoVersion}},!{{.NextGoVersion}}{{if eq .PkgName "log/syslog"}},!windows,!nacl,!plan9{{end}}
+
 package {{.Dest}}
 
 // Code generated by 'goexports {{.PkgName}}'. DO NOT EDIT.

interp/cfg.go

@@ -343,7 +343,7 @@ func (interp *Interpreter) cfg(root *node) ([]*node, error) {
 				dest, src := n.child[i], n.child[sbase+i]
 				var sym *symbol
 				var level int
-				if n.kind == defineStmt {
+				if n.kind == defineStmt || (n.kind == assignStmt && dest.ident == "_") {
 					if src.typ != nil && src.typ.cat == nilT {
 						err = src.cfgErrorf("use of untyped nil")
 						break

interp/interp.go

@@ -123,7 +123,7 @@ type Options struct {
 // New returns a new interpreter
 func New(options Options) *Interpreter {
 	i := Interpreter{
-		opt:      opt{goPath: getGoPath(options)},
+		opt:      opt{goPath: options.GoPath},
 		fset:     token.NewFileSet(),
 		universe: initUniverse(),
 		scopes:   map[string]*scope{},
@@ -143,18 +143,6 @@ func New(options Options) *Interpreter {
 	return &i
 }
 
-func getGoPath(options Options) string {
-	if options.GoPath != "" {
-		return options.GoPath
-	}
-
-	goPath, err := os.Executable()
-	if err != nil {
-		panic(err)
-	}
-	return goPath
-}
-
 func initUniverse() *scope {
 	sc := &scope{global: true, sym: map[string]*symbol{
 		// predefined Go types

stdlib/go1_11_log_syslog.go

@@ -1,4 +1,4 @@
-// +build go1.11,!go1.12
+// +build go1.11,!go1.12,!windows,!nacl,!plan9
 
 package stdlib
 

stdlib/go1_12_log_syslog.go

@@ -1,4 +1,4 @@
-// +build go1.12,!go1.13
+// +build go1.12,!go1.13,!windows,!nacl,!plan9
 
 package stdlib