use mutexes on escape code

go.mod

@@ -11,7 +11,7 @@ require (
 	github.com/golang/protobuf v1.3.2 // indirect
 	github.com/google/go-cmp v0.3.1 // indirect
 	github.com/integrii/flaggy v1.4.0
-	github.com/jesseduffield/gocui v0.3.1-0.20200112022728-874f1f64ada7
+	github.com/jesseduffield/gocui v0.3.1-0.20200112025325-6c933915c351
 	github.com/jesseduffield/pty v1.2.1
 	github.com/jesseduffield/rollrus v0.0.0-20190701125922-dd028cb0bfd7
 	github.com/jesseduffield/termbox-go v0.0.0-20190630083001-9dd53af7214e // indirect

go.sum

@@ -79,8 +79,8 @@ github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 h1:BQSFePA1RWJOl
 github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99/go.mod h1:1lJo3i6rXxKeerYnT8Nvf0QmHCRC1n8sfWVwXF2Frvo=
 github.com/jesseduffield/gocui v0.3.1-0.20191116013947-b13bda319532 h1:V1Lk2rm5/p27NjnlF2ezzkxDaisHNcveMNueSD7RYgs=
 github.com/jesseduffield/gocui v0.3.1-0.20191116013947-b13bda319532/go.mod h1:2RtZznzYKt8RLRwvFiSkXjU0Ei8WwHdubgnlaYH47dw=
-github.com/jesseduffield/gocui v0.3.1-0.20200112022728-874f1f64ada7 h1:tUFXrq4adXbLukiRhHBDkmk306mhEzdxhEtKbix4FeQ=
+github.com/jesseduffield/gocui v0.3.1-0.20200112025325-6c933915c351 h1:+sSqd2YotacWt+1MNRN8ZmXnYoiJeblZeptzKiHIyv0=
-github.com/jesseduffield/gocui v0.3.1-0.20200112022728-874f1f64ada7/go.mod h1:2RtZznzYKt8RLRwvFiSkXjU0Ei8WwHdubgnlaYH47dw=
+github.com/jesseduffield/gocui v0.3.1-0.20200112025325-6c933915c351/go.mod h1:2RtZznzYKt8RLRwvFiSkXjU0Ei8WwHdubgnlaYH47dw=
 github.com/jesseduffield/pty v1.2.1 h1:7xYBiwNH0PpWqC8JmvrPq1a/ksNqyCavzWu9pbBGYWI=
 github.com/jesseduffield/pty v1.2.1/go.mod h1:7jlS40+UhOqkZJDIG1B/H21xnuET/+fvbbnHCa8wSIo=
 github.com/jesseduffield/roll v0.0.0-20190629104057-695be2e62b00 h1:+JaOkfBNYQYlGD7dgru8mCwYNEc5tRRI8mThlVANhSM=

vendor/github.com/jesseduffield/gocui/escape.go

@@ -5,8 +5,10 @@
 package gocui
 
 import (
-	"github.com/go-errors/errors"
 	"strconv"
+	"sync"
+
+	"github.com/go-errors/errors"
 )
 
 type escapeInterpreter struct {
@@ -15,6 +17,7 @@ type escapeInterpreter struct {
 	csiParam               []string
 	curFgColor, curBgColor Attribute
 	mode                   OutputMode
+	mutex                  sync.Mutex
 }
 
 type escapeState int
@@ -34,6 +37,9 @@ var (
 
 // runes in case of error will output the non-parsed runes as a string.
 func (ei *escapeInterpreter) runes() []rune {
+	ei.mutex.Lock()
+	defer ei.mutex.Unlock()
+
 	switch ei.state {
 	case stateNone:
 		return []rune{0x1b}
@@ -66,6 +72,9 @@ func newEscapeInterpreter(mode OutputMode) *escapeInterpreter {
 
 // reset sets the escapeInterpreter in initial state.
 func (ei *escapeInterpreter) reset() {
+	ei.mutex.Lock()
+	defer ei.mutex.Unlock()
+
 	ei.state = stateNone
 	ei.curFgColor = ColorDefault
 	ei.curBgColor = ColorDefault
@@ -76,6 +85,9 @@ func (ei *escapeInterpreter) reset() {
 // of an escape sequence, and as such should not be printed verbatim. Otherwise,
 // it's not an escape sequence.
 func (ei *escapeInterpreter) parseOne(ch rune) (isEscape bool, err error) {
+	ei.mutex.Lock()
+	defer ei.mutex.Unlock()
+
 	// Sanity checks
 	if len(ei.csiParam) > 20 {
 		return false, errCSITooLong
@@ -179,6 +191,9 @@ func (ei *escapeInterpreter) outputNormal() error {
 //   0x11 - 0xe8: 216 different colors
 //   0xe9 - 0x1ff: 24 different shades of grey
 func (ei *escapeInterpreter) output256() error {
+	ei.mutex.Lock()
+	defer ei.mutex.Unlock()
+
 	if len(ei.csiParam) < 3 {
 		return ei.outputNormal()
 	}

vendor/modules.txt

@@ -32,7 +32,7 @@ github.com/hashicorp/hcl/json/token
 github.com/integrii/flaggy
 # github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99
 github.com/jbenet/go-context/io
-# github.com/jesseduffield/gocui v0.3.1-0.20200112022728-874f1f64ada7
+# github.com/jesseduffield/gocui v0.3.1-0.20200112025325-6c933915c351
 github.com/jesseduffield/gocui
 # github.com/jesseduffield/pty v1.2.1
 github.com/jesseduffield/pty