Export FZF_* variables to 'reload' process as well

src/core.go

@@ -213,6 +213,7 @@ func Run(opts *Options, version string, revision string) {
 	reading := true
 	ticks := 0
 	var nextCommand *string
+	var nextEnviron []string
 	eventBox.Watch(EvtReadNew)
 	total := 0
 	query := []rune{}
@@ -232,13 +233,13 @@ func Run(opts *Options, version string, revision string) {
 	useSnapshot := false
 	var snapshot []*Chunk
 	var count int
-	restart := func(command string) {
+	restart := func(command string, environ []string) {
 		reading = true
 		chunkList.Clear()
 		itemIndex = 0
 		inputRevision++
 		header = make([]string, 0, opts.HeaderLines)
-		go reader.restart(command)
+		go reader.restart(command, environ)
 	}
 	for {
 		delay := true
@@ -266,8 +267,9 @@ func Run(opts *Options, version string, revision string) {
 					os.Exit(value.(int))
 				case EvtReadNew, EvtReadFin:
 					if evt == EvtReadFin && nextCommand != nil {
-						restart(*nextCommand)
+						restart(*nextCommand, nextEnviron)
 						nextCommand = nil
+						nextEnviron = nil
 						break
 					} else {
 						reading = reading && evt == EvtReadNew
@@ -292,11 +294,13 @@ func Run(opts *Options, version string, revision string) {
 
 				case EvtSearchNew:
 					var command *string
+					var environ []string
 					var changed bool
 					switch val := value.(type) {
 					case searchRequest:
 						sort = val.sort
 						command = val.command
+						environ = val.environ
 						changed = val.changed
 						if command != nil {
 							useSnapshot = val.sync
@@ -306,8 +310,9 @@ func Run(opts *Options, version string, revision string) {
 						if reading {
 							reader.terminate()
 							nextCommand = command
+							nextEnviron = environ
 						} else {
-							restart(*command)
+							restart(*command, environ)
 						}
 					}
 					if !changed {

src/reader.go

@@ -85,10 +85,10 @@ func (r *Reader) terminate() {
 	r.mutex.Unlock()
 }
 
-func (r *Reader) restart(command string) {
+func (r *Reader) restart(command string, environ []string) {
 	r.event = int32(EvtReady)
 	r.startEventPoller()
-	success := r.readFromCommand(command)
+	success := r.readFromCommand(command, environ)
 	r.fin(success)
 }
 
@@ -101,7 +101,8 @@ func (r *Reader) ReadSource() {
 		if len(cmd) == 0 {
 			success = r.readFiles()
 		} else {
-			success = r.readFromCommand(cmd)
+			// We can't export FZF_* environment variables to the default command
+			success = r.readFromCommand(cmd, nil)
 		}
 	} else {
 		success = r.readFromStdin()
@@ -171,11 +172,14 @@ func (r *Reader) readFiles() bool {
 	return fastwalk.Walk(&conf, ".", fn) == nil
 }
 
-func (r *Reader) readFromCommand(command string) bool {
+func (r *Reader) readFromCommand(command string, environ []string) bool {
 	r.mutex.Lock()
 	r.killed = false
 	r.command = &command
 	r.exec = util.ExecCommand(command, true)
+	if environ != nil {
+		r.exec.Env = environ
+	}
 	out, err := r.exec.StdoutPipe()
 	if err != nil {
 		r.mutex.Unlock()

src/terminal.go

@@ -499,6 +499,7 @@ type searchRequest struct {
 	sort    bool
 	sync    bool
 	command *string
+	environ []string
 	changed bool
 }
 
@@ -4081,10 +4082,15 @@ func (t *Terminal) Loop() {
 			req(reqPrompt)
 		}
 
+		reload := changed || newCommand != nil
+		var reloadRequest *searchRequest
+		if reload {
+			reloadRequest = &searchRequest{sort: t.sort, sync: reloadSync, command: newCommand, environ: t.environ(), changed: changed}
+		}
 		t.mutex.Unlock() // Must be unlocked before touching reqBox
 
-		if changed || newCommand != nil {
+		if reload {
-			t.eventBox.Set(EvtSearchNew, searchRequest{sort: t.sort, sync: reloadSync, command: newCommand, changed: changed})
+			t.eventBox.Set(EvtSearchNew, *reloadRequest)
 		}
 		for _, event := range events {
 			t.reqBox.Set(event, nil)

test/test_go.rb

@@ -1918,7 +1918,7 @@ class TestGoFZF < TestBase
   end
 
   def test_reload
-    tmux.send_keys %(seq 1000 | #{FZF} --bind 'change:reload(seq {q}),a:reload(seq 100),b:reload:seq 200' --header-lines 2 --multi 2), :Enter
+    tmux.send_keys %(seq 1000 | #{FZF} --bind 'change:reload(seq $FZF_QUERY),a:reload(seq 100),b:reload:seq 200' --header-lines 2 --multi 2), :Enter
     tmux.until { |lines| assert_equal 998, lines.match_count }
     tmux.send_keys 'a'
     tmux.until do |lines|