fix(commit): collapse and cap the auto-staging untracked listing

src/commands/commit.rs

@@ -258,10 +258,7 @@ impl CommitOptions<'_> {
         }
 
         if self.stage_mode == StageMode::All {
-            let status = wt
-                .run_command(&["status", "--porcelain", "-z", "-uall"])
-                .context("Failed to get status")?;
-            warn_about_untracked_files(&status)?;
+            warn_about_untracked_files(&wt)?;
         }
 
         // Stage changes based on mode. Re-gated inside `stage`: the refusal

src/commands/repository_ext.rs

@@ -4,11 +4,13 @@ use super::worktree::{RemovalPlan, SharedBranchCheckout};
 use anyhow::{Context, bail};
 use color_print::cformat;
 use worktrunk::git::{
-    BranchDeletionMode, GitError, IntegrationReason, RefSnapshot, Repository, WorktreeInfo,
-    parse_porcelain_z, parse_untracked_files,
+    BranchDeletionMode, GitError, IntegrationReason, RefSnapshot, Repository, WorkingTree,
+    WorktreeInfo, parse_porcelain_z, parse_untracked_files,
 };
 use worktrunk::path::format_path_for_display;
-use worktrunk::styling::{eprintln, format_with_gutter, suggest_command, warning_message};
+use worktrunk::styling::{
+    eprintln, format_with_gutter, hint_message, suggest_command, warning_message,
+};
 
 /// Target for worktree removal.
 #[derive(Debug)]
@@ -31,9 +33,6 @@ pub enum RemoveTarget {
 /// CLI-only helpers implemented on [`Repository`] via an extension trait so we can keep orphan
 /// implementations inside the binary crate.
 pub trait RepositoryCliExt {
-    /// Warn about untracked files being auto-staged.
-    fn warn_if_auto_staging_untracked(&self) -> anyhow::Result<()>;
-
     /// Prepare the removal of whichever worktree or branch [`RemoveTarget`]
     /// names.
     ///
@@ -99,15 +98,6 @@ pub trait RepositoryCliExt {
 }
 
 impl RepositoryCliExt for Repository {
-    fn warn_if_auto_staging_untracked(&self) -> anyhow::Result<()> {
-        // `-uall` overrides the user's display preference and expands untracked
-        // directories so the warning names every path `git add -A` will stage.
-        let status = self
-            .run_command(&["status", "--porcelain", "-z", "-uall"])
-            .context("Failed to get status")?;
-        warn_about_untracked_files(&status)
-    }
-
     #[allow(clippy::too_many_arguments)]
     fn prepare_worktree_removal(
         &self,
@@ -620,8 +610,18 @@ pub(crate) fn check_not_default_branch(
 }
 
 /// Warn about untracked files that will be auto-staged.
-pub(crate) fn warn_about_untracked_files(status_output: &str) -> anyhow::Result<()> {
-    let files = parse_untracked_files(status_output);
+///
+/// The listing has at most `MAX_ROWS` rows. Past that many paths, the last row
+/// is a hint counting the rest, which is always at least two paths.
+pub(crate) fn warn_about_untracked_files(wt: &WorkingTree) -> anyhow::Result<()> {
+    const MAX_ROWS: usize = 10;
+
+    // `-uall` overrides the user's display preference and expands untracked
+    // directories so the warning counts every path `git add -A` will stage.
+    let status = wt
+        .run_command(&["status", "--porcelain", "-z", "-uall"])
+        .context("Failed to get status")?;
+    let files = parse_untracked_files(&status);
     if files.is_empty() {
         return Ok(());
     }
@@ -633,8 +633,16 @@ pub(crate) fn warn_about_untracked_files(status_output: &str) -> anyhow::Result<
         warning_message(format!("Auto-staging {count} untracked {path_word}:"))
     );
 
-    let joined_files = files.join("\n");
-    eprintln!("{}", format_with_gutter(&joined_files, None));
+    let listed = if count > MAX_ROWS {
+        MAX_ROWS - 1
+    } else {
+        count
+    };
+    eprintln!("{}", format_with_gutter(&files[..listed].join("\n"), None));
+    if listed < count {
+        let omitted = count - listed;
+        eprintln!("{}", hint_message(format!("… and {omitted} other paths")));
+    }
 
     Ok(())
 }

src/commands/step/squash.rs

@@ -17,7 +17,7 @@ use super::super::command_executor::FailureStrategy;
 use super::super::commit::{CommitGenerator, CommitOutcome, HookGate, StageMode};
 use super::super::context::CommandEnv;
 use super::super::hooks::{HookAnnouncer, execute_hook};
-use super::super::repository_ext::RepositoryCliExt;
+use super::super::repository_ext::warn_about_untracked_files;
 use super::super::template_vars::TemplateVars;
 use super::shared::print_dry_run;
 
@@ -160,7 +160,7 @@ pub fn handle_squash(
 
     // Auto-stage changes before running pre-commit hooks so both beta and merge paths behave identically
     if stage_mode == StageMode::All {
-        repo.warn_if_auto_staging_untracked()?;
+        warn_about_untracked_files(&wt)?;
     }
     wt.stage(stage_mode)?;
 

tests/integration_tests/merge.rs

@@ -2769,6 +2769,30 @@ fn test_step_commit_auto_staging_warns_about_untracked_files_hidden_by_user_conf
     assert_hidden_untracked_auto_staging_warning(&output, "step commit");
 }
 
+/// Ten paths fill the listing's ten rows. One more lists nine and counts the
+/// other two, so the hint never takes the row a single remaining path would
+/// have used.
+#[rstest]
+fn test_step_commit_auto_staging_caps_untracked_listing(
+    repo: TestRepo,
+    #[values(10, 11)] count: usize,
+) {
+    fs::create_dir(repo.root_path().join("generated")).unwrap();
+    for i in 1..=count {
+        fs::write(repo.root_path().join(format!("generated/{i:02}.txt")), "").unwrap();
+    }
+
+    let mut cmd = make_snapshot_cmd(&repo, "step", &["commit"], None);
+    cmd.env(
+        "WORKTRUNK_COMMIT__GENERATION__COMMAND",
+        "cat >/dev/null && echo 'feat: add generated files'",
+    );
+    assert_cmd_snapshot!(
+        format!("step_commit_auto_staging_caps_untracked_listing_{count}"),
+        cmd
+    );
+}
+
 #[rstest]
 fn test_step_commit_with_stage_tracked_flag(repo: TestRepo) {
     fs::write(repo.root_path().join("tracked.txt"), "initial").expect("Failed to write file");

tests/snapshots/integration__integration_tests__merge__step_commit_auto_staging_caps_untracked_listing_10.snap

@@ -0,0 +1,76 @@
+---
+source: tests/integration_tests/merge.rs
+info:
+  program: wt
+  args:
+    - step
+    - commit
+  env:
+    APPDATA: "[TEST_CONFIG_HOME]"
+    CLAUDE_CONFIG_DIR: "[TEST_CLAUDE_CONFIG]"
+    CLICOLOR_FORCE: "1"
+    COLUMNS: "500"
+    GIT_ALLOW_PROTOCOL: file
+    GIT_AUTHOR_DATE: "2025-01-01T00:00:00Z"
+    GIT_AUTHOR_EMAIL: test@example.com
+    GIT_AUTHOR_NAME: Test User
+    GIT_COMMITTER_DATE: "2025-01-01T00:00:00Z"
+    GIT_COMMITTER_EMAIL: test@example.com
+    GIT_COMMITTER_NAME: Test User
+    GIT_CONFIG_COUNT: "2"
+    GIT_CONFIG_GLOBAL: /nonexistent/wt/gitconfig
+    GIT_CONFIG_KEY_0: user.useConfigOnly
+    GIT_CONFIG_KEY_1: rerere.enabled
+    GIT_CONFIG_SYSTEM: /nonexistent/wt/gitconfig
+    GIT_CONFIG_VALUE_0: "true"
+    GIT_CONFIG_VALUE_1: "false"
+    GIT_TERMINAL_PROMPT: "0"
+    HOME: "[TEST_HOME]"
+    LANG: C
+    LC_ALL: C
+    LLVM_PROFILE_FILE: "[LLVM_PROFILE_FILE]"
+    OPENCODE_CONFIG_DIR: "[TEST_OPENCODE_CONFIG]"
+    PATH: "[PATH]"
+    TERM: alacritty
+    USERPROFILE: "[TEST_HOME]"
+    WORKTRUNK_APPROVALS_PATH: "[TEST_APPROVALS]"
+    WORKTRUNK_COMMIT__GENERATION__COMMAND: "cat >/dev/null && echo 'feat: add generated files'"
+    WORKTRUNK_CONFIG_PATH: "[TEST_CONFIG]"
+    WORKTRUNK_SYSTEM_CONFIG_PATH: "[TEST_SYSTEM_CONFIG]"
+    WORKTRUNK_TEST_BASH_INSTALLED: "0"
+    WORKTRUNK_TEST_CLAUDE_INSTALLED: "0"
+    WORKTRUNK_TEST_CODEX_INSTALLED: "0"
+    WORKTRUNK_TEST_DELAYED_STREAM_MS: "-1"
+    WORKTRUNK_TEST_EPOCH: "1735776000"
+    WORKTRUNK_TEST_FISH_INSTALLED: "0"
+    WORKTRUNK_TEST_GEMINI_INSTALLED: "0"
+    WORKTRUNK_TEST_MOCK_CONFIG_DIR: "[TEST_MOCK_CONFIG]"
+    WORKTRUNK_TEST_NUSHELL_ENV: "0"
+    WORKTRUNK_TEST_OPENCODE_INSTALLED: "0"
+    WORKTRUNK_TEST_PARENT_SHELL: ""
+    WORKTRUNK_TEST_POWERSHELL_ENV: "0"
+    WORKTRUNK_TEST_POWERSHELL_INSTALLED: "0"
+    WORKTRUNK_TEST_PROBE_TIMEOUT_MS: "60000"
+    WORKTRUNK_TEST_SKIP_URL_HEALTH_CHECK: "1"
+    WORKTRUNK_TEST_ZSH_INSTALLED: "0"
+    XDG_CONFIG_HOME: "[TEST_CONFIG_HOME]"
+---
+success: true
+exit_code: 0
+----- stdout -----
+
+----- stderr -----
+▲ Auto-staging 10 untracked paths:
+  generated/01.txt
+  generated/02.txt
+  generated/03.txt
+  generated/04.txt
+  generated/05.txt
+  generated/06.txt
+  generated/07.txt
+  generated/08.txt
+  generated/09.txt
+  generated/10.txt
+◎ Generating commit message and committing changes... (10 files)
+  feat: add generated files
+✓ Committed changes @ [HASH]

tests/snapshots/integration__integration_tests__merge__step_commit_auto_staging_caps_untracked_listing_11.snap

@@ -0,0 +1,76 @@
+---
+source: tests/integration_tests/merge.rs
+info:
+  program: wt
+  args:
+    - step
+    - commit
+  env:
+    APPDATA: "[TEST_CONFIG_HOME]"
+    CLAUDE_CONFIG_DIR: "[TEST_CLAUDE_CONFIG]"
+    CLICOLOR_FORCE: "1"
+    COLUMNS: "500"
+    GIT_ALLOW_PROTOCOL: file
+    GIT_AUTHOR_DATE: "2025-01-01T00:00:00Z"
+    GIT_AUTHOR_EMAIL: test@example.com
+    GIT_AUTHOR_NAME: Test User
+    GIT_COMMITTER_DATE: "2025-01-01T00:00:00Z"
+    GIT_COMMITTER_EMAIL: test@example.com
+    GIT_COMMITTER_NAME: Test User
+    GIT_CONFIG_COUNT: "2"
+    GIT_CONFIG_GLOBAL: /nonexistent/wt/gitconfig
+    GIT_CONFIG_KEY_0: user.useConfigOnly
+    GIT_CONFIG_KEY_1: rerere.enabled
+    GIT_CONFIG_SYSTEM: /nonexistent/wt/gitconfig
+    GIT_CONFIG_VALUE_0: "true"
+    GIT_CONFIG_VALUE_1: "false"
+    GIT_TERMINAL_PROMPT: "0"
+    HOME: "[TEST_HOME]"
+    LANG: C
+    LC_ALL: C
+    LLVM_PROFILE_FILE: "[LLVM_PROFILE_FILE]"
+    OPENCODE_CONFIG_DIR: "[TEST_OPENCODE_CONFIG]"
+    PATH: "[PATH]"
+    TERM: alacritty
+    USERPROFILE: "[TEST_HOME]"
+    WORKTRUNK_APPROVALS_PATH: "[TEST_APPROVALS]"
+    WORKTRUNK_COMMIT__GENERATION__COMMAND: "cat >/dev/null && echo 'feat: add generated files'"
+    WORKTRUNK_CONFIG_PATH: "[TEST_CONFIG]"
+    WORKTRUNK_SYSTEM_CONFIG_PATH: "[TEST_SYSTEM_CONFIG]"
+    WORKTRUNK_TEST_BASH_INSTALLED: "0"
+    WORKTRUNK_TEST_CLAUDE_INSTALLED: "0"
+    WORKTRUNK_TEST_CODEX_INSTALLED: "0"
+    WORKTRUNK_TEST_DELAYED_STREAM_MS: "-1"
+    WORKTRUNK_TEST_EPOCH: "1735776000"
+    WORKTRUNK_TEST_FISH_INSTALLED: "0"
+    WORKTRUNK_TEST_GEMINI_INSTALLED: "0"
+    WORKTRUNK_TEST_MOCK_CONFIG_DIR: "[TEST_MOCK_CONFIG]"
+    WORKTRUNK_TEST_NUSHELL_ENV: "0"
+    WORKTRUNK_TEST_OPENCODE_INSTALLED: "0"
+    WORKTRUNK_TEST_PARENT_SHELL: ""
+    WORKTRUNK_TEST_POWERSHELL_ENV: "0"
+    WORKTRUNK_TEST_POWERSHELL_INSTALLED: "0"
+    WORKTRUNK_TEST_PROBE_TIMEOUT_MS: "60000"
+    WORKTRUNK_TEST_SKIP_URL_HEALTH_CHECK: "1"
+    WORKTRUNK_TEST_ZSH_INSTALLED: "0"
+    XDG_CONFIG_HOME: "[TEST_CONFIG_HOME]"
+---
+success: true
+exit_code: 0
+----- stdout -----
+
+----- stderr -----
+▲ Auto-staging 11 untracked paths:
+  generated/01.txt
+  generated/02.txt
+  generated/03.txt
+  generated/04.txt
+  generated/05.txt
+  generated/06.txt
+  generated/07.txt
+  generated/08.txt
+  generated/09.txt
+↳ … and 2 other paths
+◎ Generating commit message and committing changes... (11 files)
+  feat: add generated files
+✓ Committed changes @ [HASH]