diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 761d017..9f1d9b6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,11 +10,11 @@ jobs:
     strategy:
       matrix:
         os: [ "ubuntu-latest", "macos-latest" ]
-        go-version: [ "1.18" ]
+        go-version: [ "1.25.x" ]
     runs-on: ${{ matrix.os }}
     steps:
     - name: setup Go ${{ matrix.go-version }}
-      uses: actions/setup-go@v3
+      uses: actions/setup-go@v6
       with:
         go-version: ${{ matrix.go-version }}
     - name: checkout
@@ -22,7 +22,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: lint
-      uses: dominikh/staticcheck-action@v1.2.0
+      uses: dominikh/staticcheck-action@v1.3.0
       with:
           version: "2022.1"
           install-go: false
diff --git a/go.mod b/go.mod
index e07083e..67ee159 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/mnowotnik/fzshell
 
-go 1.18
+go 1.25
 
 require (
 	github.com/Masterminds/sprig/v3 v3.0.2
diff --git a/internal/compl/source.go b/internal/compl/source.go
index d9eb6c3..f546a86 100644
--- a/internal/compl/source.go
+++ b/internal/compl/source.go
@@ -3,12 +3,12 @@ package compl
 import (
 	"os"
 	"os/exec"
-
 	"text/template"
 
 	fzf "github.com/mnowotnik/fzf/src"
 	"github.com/mnowotnik/fzshell/internal/utils"
 	"github.com/pkg/errors"
+	"golang.org/x/term"
 )
 
 type CompletionSource struct {
@@ -110,7 +110,7 @@ func (cs *CompletionSource) pipeCommandToFzf(args []string, kwargs map[string]st
 		}
 	}
 	options.Select1 = cs.SelectOne
-	if returnAll {
+	if returnAll || !term.IsTerminal(int(os.Stdout.Fd())) || !term.IsTerminal(int(os.Stdin.Fd())) || !term.IsTerminal(int(os.Stderr.Fd())) {
 		var filter string = ""
 		options.Filter = &filter
 	}
diff --git a/tests/functional/completions_test.go b/tests/functional/completions_test.go
new file mode 100644
index 0000000..4c71535
--- /dev/null
+++ b/tests/functional/completions_test.go
@@ -0,0 +1,44 @@
+package functional_test
+
+import (
+	"path/filepath"
+	"testing"
+)
+
+func TestReturnAllOutputsAllItems(t *testing.T) {
+	configPath := filepath.Join(repoRoot, "tests", "functional", "fixtures", "simple.yaml")
+
+	result := runFzshell(t, []string{"--config", configPath, "--all", "simple"}, "", nil)
+
+	if result.ExitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d (stderr: %q)", result.ExitCode, result.Stderr)
+	}
+
+	const expectedOutput = "alpha\nbeta\n"
+	if result.Stdout != expectedOutput {
+		t.Fatalf("unexpected stdout: got %q, want %q", result.Stdout, expectedOutput)
+	}
+
+	if result.Stderr != "" {
+		t.Fatalf("expected empty stderr, got %q", result.Stderr)
+	}
+}
+
+func TestReplacementRendersLineBuffer(t *testing.T) {
+	configPath := filepath.Join(repoRoot, "tests", "functional", "fixtures", "replacement.yaml")
+
+	result := runFzshell(t, []string{"--config", configPath, "ticket 42/build"}, "", nil)
+
+	if result.ExitCode != 0 {
+		t.Fatalf("expected exit code 0, got %d (stderr: %q)", result.ExitCode, result.Stderr)
+	}
+
+	const expectedOutput = "ticket 42/build -> 42|build|command:42:build"
+	if result.Stdout != expectedOutput {
+		t.Fatalf("unexpected stdout: got %q, want %q", result.Stdout, expectedOutput)
+	}
+
+	if result.Stderr != "" {
+		t.Fatalf("expected empty stderr, got %q", result.Stderr)
+	}
+}
diff --git a/tests/functional/fixtures/replacement.yaml b/tests/functional/fixtures/replacement.yaml
new file mode 100644
index 0000000..7bd4745
--- /dev/null
+++ b/tests/functional/fixtures/replacement.yaml
@@ -0,0 +1,6 @@
+completions:
+  - pattern: "ticket (?P<ID>[0-9]+)/(\\w+)$"
+    cmd: "printf 'command:%s:%s\\n' \"$ID\" \"$1\""
+    map: "{{ printf \"%s|%s|%s\" .ID ._1 .item }}"
+    replacement: "ticket {{.ID}}/{{._1}} -> {{.item}}"
+    selectOne: true
diff --git a/tests/functional/fixtures/simple.yaml b/tests/functional/fixtures/simple.yaml
new file mode 100644
index 0000000..f6dd023
--- /dev/null
+++ b/tests/functional/fixtures/simple.yaml
@@ -0,0 +1,3 @@
+completions:
+  - pattern: "simple$"
+    cmd: "printf 'alpha\\nbeta\\n'"