From 03c42ee8c8c627d9f27cdfeedaa2c64282288f92 Mon Sep 17 00:00:00 2001
From: ccoVeille <3875889+ccoVeille@users.noreply.github.com>
Date: Fri, 5 Apr 2024 22:01:19 +0200
Subject: [PATCH 1/2] Refactor to use consistent parserState receiver

---
 oviewer/content.go | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/oviewer/content.go b/oviewer/content.go
index c2ed51e8..8bf7cb5c 100644
--- a/oviewer/content.go
+++ b/oviewer/content.go
@@ -286,18 +286,18 @@ func (es *parseState) parseEscapeSequence(mainc rune) bool {
 }
 
 // overstrike set style for overstrike.
-func (state *parseState) overstrike(m content, style tcell.Style) tcell.Style {
-	if !state.bsFlag {
+func (es *parseState) overstrike(m content, style tcell.Style) tcell.Style {
+	if !es.bsFlag {
 		return style
 	}
 
-	if state.bsContent.mainc == m.mainc {
+	if es.bsContent.mainc == m.mainc {
 		style = OverStrikeStyle
-	} else if state.bsContent.mainc == '_' {
+	} else if es.bsContent.mainc == '_' {
 		style = OverLineStyle
 	}
-	state.bsFlag = false
-	state.bsContent = DefaultContent
+	es.bsFlag = false
+	es.bsContent = DefaultContent
 	return style
 }
 

From 363dfc71fe8a818bade5165d56a5dd0033e3e677 Mon Sep 17 00:00:00 2001
From: ccoVeille <3875889+ccoVeille@users.noreply.github.com>
Date: Fri, 5 Apr 2024 22:02:51 +0200
Subject: [PATCH 2/2] Clean unused receivers

The code is clearer about what is used
---
 oviewer/draw.go                    |  4 ++--
 oviewer/event.go                   |  2 +-
 oviewer/input_delimiter.go         |  8 ++++----
 oviewer/input_filter.go            |  4 ++--
 oviewer/input_goto.go              |  8 ++++----
 oviewer/input_header.go            |  8 ++++----
 oviewer/input_jumptarget.go        |  8 ++++----
 oviewer/input_multicolor.go        |  4 ++--
 oviewer/input_normal.go            | 10 +++++-----
 oviewer/input_savebuffer.go        |  8 ++++----
 oviewer/input_search.go            |  8 ++++----
 oviewer/input_section_delimiter.go |  8 ++++----
 oviewer/input_section_num.go       |  8 ++++----
 oviewer/input_section_start.go     |  8 ++++----
 oviewer/input_skip.go              |  8 ++++----
 oviewer/input_tabwidth.go          |  8 ++++----
 oviewer/input_viewmode.go          |  8 ++++----
 oviewer/input_watch.go             |  8 ++++----
 oviewer/input_writeba.go           |  8 ++++----
 oviewer/reader.go                  |  2 +-
 oviewer/search.go                  |  2 +-
 21 files changed, 70 insertions(+), 70 deletions(-)

diff --git a/oviewer/draw.go b/oviewer/draw.go
index d166e782..a3da8a69 100644
--- a/oviewer/draw.go
+++ b/oviewer/draw.go
@@ -296,7 +296,7 @@ func (root *Root) drawNoWrapLine(y int, startX int, lN int, lc contents) (int, i
 
 // bodyStyle applies the style from the beginning to the end of one line of the body.
 // Apply style to contents.
-func (root *Root) bodyStyle(lc contents, s OVStyle) {
+func (*Root) bodyStyle(lc contents, s OVStyle) {
 	RangeStyle(lc, 0, len(lc), s)
 }
 
@@ -314,7 +314,7 @@ func (root *Root) searchHighlight(line LineC) {
 }
 
 // plainStyle defaults to the original style.
-func (root *Root) plainStyle(lc contents) {
+func (*Root) plainStyle(lc contents) {
 	for x := 0; x < len(lc); x++ {
 		lc[x].style = tcell.StyleDefault
 	}
diff --git a/oviewer/event.go b/oviewer/event.go
index ddf0676c..6d4cafb8 100644
--- a/oviewer/event.go
+++ b/oviewer/event.go
@@ -277,7 +277,7 @@ type eventCloseDocument struct {
 }
 
 // CloseDocument fires the eventCloseDocument event.
-func (root *Root) CloseDocument(m *Document) {
+func (root *Root) CloseDocument(_ *Document) {
 	root.sendCloseDocument()
 }
 
diff --git a/oviewer/input_delimiter.go b/oviewer/input_delimiter.go
index 267f63e5..4d57fdd8 100644
--- a/oviewer/input_delimiter.go
+++ b/oviewer/input_delimiter.go
@@ -41,12 +41,12 @@ func newDelimiterEvent(clist *candidate) *eventDelimiter {
 }
 
 // Mode returns InputMode.
-func (e *eventDelimiter) Mode() InputMode {
+func (*eventDelimiter) Mode() InputMode {
 	return Delimiter
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventDelimiter) Prompt() string {
+func (*eventDelimiter) Prompt() string {
 	return "Delimiter:"
 }
 
@@ -59,11 +59,11 @@ func (e *eventDelimiter) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventDelimiter) Up(str string) string {
+func (e *eventDelimiter) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventDelimiter) Down(str string) string {
+func (e *eventDelimiter) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_filter.go b/oviewer/input_filter.go
index f9dbf659..5634bd7a 100644
--- a/oviewer/input_filter.go
+++ b/oviewer/input_filter.go
@@ -35,12 +35,12 @@ func newSearchFilterEvent(clist *candidate) *eventInputFilter {
 }
 
 // Mode returns InputMode.
-func (e *eventInputFilter) Mode() InputMode {
+func (*eventInputFilter) Mode() InputMode {
 	return Filter
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventInputFilter) Prompt() string {
+func (*eventInputFilter) Prompt() string {
 	return "&"
 }
 
diff --git a/oviewer/input_goto.go b/oviewer/input_goto.go
index ed9a9c69..22cea205 100644
--- a/oviewer/input_goto.go
+++ b/oviewer/input_goto.go
@@ -30,12 +30,12 @@ func newGotoEvent(clist *candidate) *eventGoto {
 }
 
 // Mode returns InputMode.
-func (e *eventGoto) Mode() InputMode {
+func (*eventGoto) Mode() InputMode {
 	return Goline
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventGoto) Prompt() string {
+func (*eventGoto) Prompt() string {
 	return "Goto line:"
 }
 
@@ -48,11 +48,11 @@ func (e *eventGoto) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventGoto) Up(str string) string {
+func (e *eventGoto) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventGoto) Down(str string) string {
+func (e *eventGoto) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_header.go b/oviewer/input_header.go
index b33c1ece..57ea805c 100644
--- a/oviewer/input_header.go
+++ b/oviewer/input_header.go
@@ -26,12 +26,12 @@ func newHeaderEvent() *eventHeader {
 }
 
 // Mode returns InputMode.
-func (e *eventHeader) Mode() InputMode {
+func (*eventHeader) Mode() InputMode {
 	return Header
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventHeader) Prompt() string {
+func (*eventHeader) Prompt() string {
 	return "Header length:"
 }
 
@@ -43,7 +43,7 @@ func (e *eventHeader) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventHeader) Up(str string) string {
+func (*eventHeader) Up(str string) string {
 	n, err := strconv.Atoi(str)
 	if err != nil {
 		return "0"
@@ -52,7 +52,7 @@ func (e *eventHeader) Up(str string) string {
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventHeader) Down(str string) string {
+func (*eventHeader) Down(str string) string {
 	n, err := strconv.Atoi(str)
 	if err != nil || n <= 0 {
 		return "0"
diff --git a/oviewer/input_jumptarget.go b/oviewer/input_jumptarget.go
index 0fe0ee53..e6b54898 100644
--- a/oviewer/input_jumptarget.go
+++ b/oviewer/input_jumptarget.go
@@ -37,12 +37,12 @@ func newJumpTargetEvent(clist *candidate) *eventJumpTarget {
 }
 
 // Mode returns InputMode.
-func (e *eventJumpTarget) Mode() InputMode {
+func (*eventJumpTarget) Mode() InputMode {
 	return JumpTarget
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventJumpTarget) Prompt() string {
+func (*eventJumpTarget) Prompt() string {
 	return "Jump Target line:"
 }
 
@@ -55,11 +55,11 @@ func (e *eventJumpTarget) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventJumpTarget) Up(str string) string {
+func (e *eventJumpTarget) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventJumpTarget) Down(str string) string {
+func (e *eventJumpTarget) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_multicolor.go b/oviewer/input_multicolor.go
index cc0532bc..f9db1542 100644
--- a/oviewer/input_multicolor.go
+++ b/oviewer/input_multicolor.go
@@ -45,12 +45,12 @@ func newMultiColorEvent(clist *candidate) *eventMultiColor {
 }
 
 // Mode returns InputMode.
-func (e *eventMultiColor) Mode() InputMode {
+func (*eventMultiColor) Mode() InputMode {
 	return MultiColor
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventMultiColor) Prompt() string {
+func (*eventMultiColor) Prompt() string {
 	return "multicolor:"
 }
 
diff --git a/oviewer/input_normal.go b/oviewer/input_normal.go
index ec000d2a..bab1da03 100644
--- a/oviewer/input_normal.go
+++ b/oviewer/input_normal.go
@@ -14,26 +14,26 @@ func normal() *eventNormal {
 }
 
 // Mode returns InputMode.
-func (e *eventNormal) Mode() InputMode {
+func (*eventNormal) Mode() InputMode {
 	return Normal
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventNormal) Prompt() string {
+func (*eventNormal) Prompt() string {
 	return ""
 }
 
 // Confirm returns the event when the input is confirmed.
-func (e *eventNormal) Confirm(str string) tcell.Event {
+func (*eventNormal) Confirm(_ string) tcell.Event {
 	return nil
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventNormal) Up(str string) string {
+func (*eventNormal) Up(_ string) string {
 	return ""
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventNormal) Down(str string) string {
+func (*eventNormal) Down(_ string) string {
 	return ""
 }
diff --git a/oviewer/input_savebuffer.go b/oviewer/input_savebuffer.go
index 540203a6..a1b10c24 100644
--- a/oviewer/input_savebuffer.go
+++ b/oviewer/input_savebuffer.go
@@ -39,12 +39,12 @@ func newSaveBufferEvent(clist *candidate) *eventSaveBuffer {
 }
 
 // Mode returns InputMode.
-func (e *eventSaveBuffer) Mode() InputMode {
+func (*eventSaveBuffer) Mode() InputMode {
 	return SaveBuffer
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventSaveBuffer) Prompt() string {
+func (*eventSaveBuffer) Prompt() string {
 	return "(Save)file:"
 }
 
@@ -56,11 +56,11 @@ func (e *eventSaveBuffer) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventSaveBuffer) Up(str string) string {
+func (e *eventSaveBuffer) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventSaveBuffer) Down(str string) string {
+func (e *eventSaveBuffer) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_search.go b/oviewer/input_search.go
index f6d1fd3a..c97daf87 100644
--- a/oviewer/input_search.go
+++ b/oviewer/input_search.go
@@ -43,12 +43,12 @@ func newSearchEvent(clist *candidate) *eventInputSearch {
 }
 
 // Mode returns InputMode.
-func (e *eventInputSearch) Mode() InputMode {
+func (*eventInputSearch) Mode() InputMode {
 	return Search
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventInputSearch) Prompt() string {
+func (*eventInputSearch) Prompt() string {
 	return "/"
 }
 
@@ -100,12 +100,12 @@ func newBackSearchEvent(clist *candidate) *eventInputBackSearch {
 }
 
 // Mode returns InputMode.
-func (e *eventInputBackSearch) Mode() InputMode {
+func (*eventInputBackSearch) Mode() InputMode {
 	return Backsearch
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventInputBackSearch) Prompt() string {
+func (*eventInputBackSearch) Prompt() string {
 	return "?"
 }
 
diff --git a/oviewer/input_section_delimiter.go b/oviewer/input_section_delimiter.go
index c0109deb..97c726d3 100644
--- a/oviewer/input_section_delimiter.go
+++ b/oviewer/input_section_delimiter.go
@@ -39,12 +39,12 @@ func newSectionDelimiterEvent(clist *candidate) *eventSectionDelimiter {
 }
 
 // Mode returns InputMode.
-func (e *eventSectionDelimiter) Mode() InputMode {
+func (*eventSectionDelimiter) Mode() InputMode {
 	return SectionDelimiter
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventSectionDelimiter) Prompt() string {
+func (*eventSectionDelimiter) Prompt() string {
 	return "Section delimiter:"
 }
 
@@ -57,11 +57,11 @@ func (e *eventSectionDelimiter) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventSectionDelimiter) Up(str string) string {
+func (e *eventSectionDelimiter) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventSectionDelimiter) Down(str string) string {
+func (e *eventSectionDelimiter) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_section_num.go b/oviewer/input_section_num.go
index 89c50c13..62b71387 100644
--- a/oviewer/input_section_num.go
+++ b/oviewer/input_section_num.go
@@ -26,12 +26,12 @@ func newSectionNumEvent() *eventSectionNum {
 }
 
 // Mode returns InputMode.
-func (e *eventSectionNum) Mode() InputMode {
+func (*eventSectionNum) Mode() InputMode {
 	return SectionNum
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventSectionNum) Prompt() string {
+func (*eventSectionNum) Prompt() string {
 	return "Section Num:"
 }
 
@@ -43,7 +43,7 @@ func (e *eventSectionNum) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventSectionNum) Up(str string) string {
+func (*eventSectionNum) Up(str string) string {
 	n, err := strconv.Atoi(str)
 	if err != nil {
 		return "0"
@@ -52,7 +52,7 @@ func (e *eventSectionNum) Up(str string) string {
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventSectionNum) Down(str string) string {
+func (*eventSectionNum) Down(str string) string {
 	n, err := strconv.Atoi(str)
 	if err != nil || n <= 0 {
 		return "0"
diff --git a/oviewer/input_section_start.go b/oviewer/input_section_start.go
index 4fcfb049..9bae5c4a 100644
--- a/oviewer/input_section_start.go
+++ b/oviewer/input_section_start.go
@@ -34,12 +34,12 @@ func newSectionStartEvent(clist *candidate) *eventSectionStart {
 }
 
 // Mode returns InputMode.
-func (e *eventSectionStart) Mode() InputMode {
+func (*eventSectionStart) Mode() InputMode {
 	return SectionStart
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventSectionStart) Prompt() string {
+func (*eventSectionStart) Prompt() string {
 	return "Section start:"
 }
 
@@ -52,11 +52,11 @@ func (e *eventSectionStart) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventSectionStart) Up(str string) string {
+func (e *eventSectionStart) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventSectionStart) Down(str string) string {
+func (e *eventSectionStart) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_skip.go b/oviewer/input_skip.go
index 9ff2d7c3..ed68aebb 100644
--- a/oviewer/input_skip.go
+++ b/oviewer/input_skip.go
@@ -26,12 +26,12 @@ func newSkipLinesEvent() *eventSkipLines {
 }
 
 // Mode returns InputMode.
-func (e *eventSkipLines) Mode() InputMode {
+func (*eventSkipLines) Mode() InputMode {
 	return SkipLines
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventSkipLines) Prompt() string {
+func (*eventSkipLines) Prompt() string {
 	return "Skip lines:"
 }
 
@@ -43,7 +43,7 @@ func (e *eventSkipLines) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventSkipLines) Up(str string) string {
+func (*eventSkipLines) Up(str string) string {
 	n, err := strconv.Atoi(str)
 	if err != nil {
 		return "0"
@@ -52,7 +52,7 @@ func (e *eventSkipLines) Up(str string) string {
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventSkipLines) Down(str string) string {
+func (*eventSkipLines) Down(str string) string {
 	n, err := strconv.Atoi(str)
 	if err != nil || n <= 0 {
 		return "0"
diff --git a/oviewer/input_tabwidth.go b/oviewer/input_tabwidth.go
index 295a2c64..923f9096 100644
--- a/oviewer/input_tabwidth.go
+++ b/oviewer/input_tabwidth.go
@@ -42,12 +42,12 @@ func newTabWidthEvent(clist *candidate) *eventTabWidth {
 }
 
 // Mode returns InputMode.
-func (e *eventTabWidth) Mode() InputMode {
+func (*eventTabWidth) Mode() InputMode {
 	return TabWidth
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventTabWidth) Prompt() string {
+func (*eventTabWidth) Prompt() string {
 	return "TAB width:"
 }
 
@@ -60,11 +60,11 @@ func (e *eventTabWidth) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventTabWidth) Up(str string) string {
+func (e *eventTabWidth) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventTabWidth) Down(str string) string {
+func (e *eventTabWidth) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_viewmode.go b/oviewer/input_viewmode.go
index f7bde499..934c98e8 100644
--- a/oviewer/input_viewmode.go
+++ b/oviewer/input_viewmode.go
@@ -32,12 +32,12 @@ func newViewModeEvent(clist *candidate) *eventViewMode {
 }
 
 // Mode returns InputMode.
-func (e *eventViewMode) Mode() InputMode {
+func (*eventViewMode) Mode() InputMode {
 	return ViewMode
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventViewMode) Prompt() string {
+func (*eventViewMode) Prompt() string {
 	return "Mode:"
 }
 
@@ -49,11 +49,11 @@ func (e *eventViewMode) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventViewMode) Up(str string) string {
+func (e *eventViewMode) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventViewMode) Down(str string) string {
+func (e *eventViewMode) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_watch.go b/oviewer/input_watch.go
index 74ff97db..cc002db8 100644
--- a/oviewer/input_watch.go
+++ b/oviewer/input_watch.go
@@ -34,12 +34,12 @@ func newWatchIntervalEvent(clist *candidate) *eventWatchInterval {
 }
 
 // Mode returns InputMode.
-func (e *eventWatchInterval) Mode() InputMode {
+func (*eventWatchInterval) Mode() InputMode {
 	return Watch
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventWatchInterval) Prompt() string {
+func (*eventWatchInterval) Prompt() string {
 	return "Watch interval:"
 }
 
@@ -52,11 +52,11 @@ func (e *eventWatchInterval) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventWatchInterval) Up(str string) string {
+func (e *eventWatchInterval) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventWatchInterval) Down(str string) string {
+func (e *eventWatchInterval) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/input_writeba.go b/oviewer/input_writeba.go
index 9ac3d7b4..25a09879 100644
--- a/oviewer/input_writeba.go
+++ b/oviewer/input_writeba.go
@@ -30,12 +30,12 @@ func newWriteBAEvent(clist *candidate) *eventWriteBA {
 }
 
 // Mode returns InputMode.
-func (e *eventWriteBA) Mode() InputMode {
+func (*eventWriteBA) Mode() InputMode {
 	return WriteBA
 }
 
 // Prompt returns the prompt string in the input field.
-func (e *eventWriteBA) Prompt() string {
+func (*eventWriteBA) Prompt() string {
 	return "WriteAndQuit Before:After:"
 }
 
@@ -48,11 +48,11 @@ func (e *eventWriteBA) Confirm(str string) tcell.Event {
 }
 
 // Up returns strings when the up key is pressed during input.
-func (e *eventWriteBA) Up(str string) string {
+func (e *eventWriteBA) Up(_ string) string {
 	return e.clist.up()
 }
 
 // Down returns strings when the down key is pressed during input.
-func (e *eventWriteBA) Down(str string) string {
+func (e *eventWriteBA) Down(_ string) string {
 	return e.clist.down()
 }
diff --git a/oviewer/reader.go b/oviewer/reader.go
index 897ab084..deac0521 100644
--- a/oviewer/reader.go
+++ b/oviewer/reader.go
@@ -401,7 +401,7 @@ func (m *Document) ReadFile(fileName string) error {
 // ContinueReadAll continues to read even if it reaches EOF.
 //
 // Deprecated: Use ControlFile instead.
-func (m *Document) ContinueReadAll(ctx context.Context, r io.Reader) error {
+func (m *Document) ContinueReadAll(_ context.Context, r io.Reader) error {
 	return m.ReadAll(r)
 }
 
diff --git a/oviewer/search.go b/oviewer/search.go
index d2657021..8f94986e 100644
--- a/oviewer/search.go
+++ b/oviewer/search.go
@@ -481,7 +481,7 @@ func (m *Document) BackSearchLine(ctx context.Context, searcher Searcher, lineNu
 
 // cancelWait waits for key to cancel.
 func (root *Root) cancelWait(cancel context.CancelFunc) error {
-	cancelApp := func(ev *tcell.EventKey) *tcell.EventKey {
+	cancelApp := func(_ *tcell.EventKey) *tcell.EventKey {
 		cancel()
 		root.setMessage("cancel")
 		return nil