Sort suggestions and cycle back

cmd/micro/action/infocomplete.go

@@ -2,6 +2,7 @@ package action
 
 import (
 	"bytes"
+	"sort"
 	"strings"
 
 	"github.com/zyedidia/micro/cmd/micro/buffer"
@@ -25,6 +26,7 @@ func CommandComplete(b *buffer.Buffer) ([]string, []string) {
 		}
 	}
 
+	sort.Strings(suggestions)
 	completions := make([]string, len(suggestions))
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
@@ -47,6 +49,7 @@ func HelpComplete(b *buffer.Buffer) ([]string, []string) {
 		}
 	}
 
+	sort.Strings(suggestions)
 	completions := make([]string, len(suggestions))
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
@@ -101,6 +104,7 @@ func OptionComplete(b *buffer.Buffer) ([]string, []string) {
 		}
 	}
 
+	sort.Strings(suggestions)
 	completions := make([]string, len(suggestions))
 	for i := range suggestions {
 		completions[i] = util.SliceEndStr(suggestions[i], c.X-argstart)
@@ -185,6 +189,7 @@ func OptionValueComplete(b *buffer.Buffer) ([]string, []string) {
 			}
 		}
 	}
+	sort.Strings(suggestions)
 
 	completions := make([]string, len(suggestions))
 	for i := range suggestions {

cmd/micro/action/infopane.go

@@ -151,6 +151,7 @@ var InfoOverrides = map[string]InfoKeyAction{
 	"CursorDown":    (*InfoPane).CursorDown,
 	"InsertNewline": (*InfoPane).InsertNewline,
 	"InsertTab":     (*InfoPane).InsertTab,
+	"OutdentLine":   (*InfoPane).CycleBack,
 	"Escape":        (*InfoPane).Escape,
 	"Quit":          (*InfoPane).Quit,
 	"QuitAll":       (*InfoPane).QuitAll,
@@ -165,7 +166,7 @@ func (h *InfoPane) CursorDown() {
 func (h *InfoPane) InsertTab() {
 	b := h.Buf
 	if b.HasSuggestions {
-		b.CycleAutocomplete()
+		b.CycleAutocomplete(true)
 		return
 	}
 
@@ -186,6 +187,11 @@ func (h *InfoPane) InsertTab() {
 		}
 	}
 }
+func (h *InfoPane) CycleBack() {
+	if h.Buf.HasSuggestions {
+		h.Buf.CycleAutocomplete(false)
+	}
+}
 func (h *InfoPane) InsertNewline() {
 	if !h.HasYN {
 		h.DonePrompt(false)

cmd/micro/buffer/autocomplete.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"io/ioutil"
 	"os"
+	"sort"
 	"strings"
 	"unicode/utf8"
 
@@ -29,15 +30,21 @@ func (b *Buffer) Autocomplete(c Completer) {
 		return
 	}
 	b.CurSuggestion = -1
-	b.CycleAutocomplete()
+	b.CycleAutocomplete(true)
 }
 
-func (b *Buffer) CycleAutocomplete() {
+func (b *Buffer) CycleAutocomplete(forward bool) {
 	prevSuggestion := b.CurSuggestion
 
-	b.CurSuggestion++
-	if b.CurSuggestion >= len(b.Suggestions) || b.CurSuggestion < 0 {
+	if forward {
+		b.CurSuggestion++
+	} else {
+		b.CurSuggestion--
+	}
+	if b.CurSuggestion >= len(b.Suggestions) {
 		b.CurSuggestion = 0
+	} else if b.CurSuggestion < 0 {
+		b.CurSuggestion = len(b.Suggestions) - 1
 	}
 
 	c := b.GetActiveCursor()
@@ -105,6 +112,7 @@ func FileComplete(b *Buffer) ([]string, []string) {
 		}
 	}
 
+	sort.Strings(suggestions)
 	completions := make([]string, len(suggestions))
 	for i := range suggestions {
 		var complete string