Enabling suggestions should not fetch a suggestion if buffer is empty

spec/integrations/bracketed_paste_magic_spec.rb

@@ -0,0 +1,36 @@
+describe 'pasting using bracketed-paste-magic' do
+  let(:before_sourcing) do
+    -> do
+      session.
+        run_command('autoload -Uz bracketed-paste-magic').
+        run_command('zle -N bracketed-paste bracketed-paste-magic')
+    end
+  end
+
+  context 'with suggestions disabled while pasting' do
+    before do
+      session.
+        run_command('bpm_init() { zle autosuggest-disable }').
+        run_command('bpm_finish() { zle autosuggest-enable }').
+        run_command('zstyle :bracketed-paste-magic paste-init bpm_init').
+        run_command('zstyle :bracketed-paste-magic paste-finish bpm_finish')
+    end
+
+    it 'does not show an incorrect suggestion' do
+      with_history('echo hello') do
+        session.paste_string("echo #{'a' * 60}")
+        sleep 1
+        expect(session.content).to eq("echo #{'a' * 60}")
+      end
+    end
+
+    it 'shows a suggestion after a non-modifying keystroke' do
+      with_history('echo hello') do
+        session.paste_string('echo')
+        sleep 1
+        session.send_keys('left')
+        wait_for { session.content }.to eq('echo hello')
+      end
+    end
+  end
+end

spec/terminal_session.rb

@@ -41,6 +41,13 @@ class TerminalSession
     self
   end
 
+  def paste_string(str)
+    tmux_command("set-buffer -- '#{str}'")
+    tmux_command("paste-buffer -dpr -t 0")
+
+    self
+  end
+
   def content(esc_seqs: false)
     cmd = 'capture-pane -p -t 0'
     cmd += ' -e' if esc_seqs

spec/widgets/enable_spec.rb

@@ -6,16 +6,37 @@ describe 'the `autosuggest-enable` widget' do
   end
 
   it 'enables suggestions and fetches a suggestion' do
-    with_history('echo world', 'echo hello') do
+    with_history('echo hello') do
-      session.send_string('echo')
+      session.send_string('e')
       sleep 1
-      expect(session.content).to eq('echo')
+      expect(session.content).to eq('e')
+
+      session.send_keys('C-b')
+      session.send_string('c')
+      wait_for { session.content }.to eq('echo hello')
+    end
+  end
+
+  context 'invoked on an empty buffer' do
+    it 'does not fetch a suggestion' do
+      with_history('echo hello') do
+        session.send_keys('C-b')
+        sleep 1
+        expect(session.content).to eq('')
+      end
+    end
+  end
+
+  context 'invoked on a non-empty buffer' do
+    it 'fetches a suggestion' do
+      with_history('echo hello') do
+        session.send_string('e')
+        sleep 1
+        expect(session.content).to eq('e')
 
         session.send_keys('C-b')
         wait_for { session.content }.to eq('echo hello')
-
+      end
-      session.send_string(' w')
-      wait_for { session.content }.to eq('echo world')
     end
   end
 end

src/widgets.zsh

@@ -12,7 +12,10 @@ _zsh_autosuggest_disable() {
 # Enable suggestions
 _zsh_autosuggest_enable() {
 	unset _ZSH_AUTOSUGGEST_DISABLED
+
+	if [ $#BUFFER -gt 0 ]; then
 		_zsh_autosuggest_fetch
+	fi
 }
 
 # Toggle suggestions (enable/disable)

zsh-autosuggestions.zsh

@@ -290,7 +290,10 @@ _zsh_autosuggest_disable() {
 # Enable suggestions
 _zsh_autosuggest_enable() {
 	unset _ZSH_AUTOSUGGEST_DISABLED
+
+	if [ $#BUFFER -gt 0 ]; then
 		_zsh_autosuggest_fetch
+	fi
 }
 
 # Toggle suggestions (enable/disable)