Add replay-patches command

.gitattributes

@@ -0,0 +1,7 @@
+# Keep workflow files LF-terminated regardless of the checkout platform's
+# core.autocrlf setting. Windows runners otherwise check these out with
+# CRLF, and GitHub Actions embeds a `run:` block's raw bytes verbatim into
+# the generated shell script -- Cygwin's bash (unlike Git Bash) rejects a
+# CRLF-terminated line like "set +e\r" with "invalid option".
+.github/workflows/*.yml text eol=lf
+.github/workflows/*.yaml text eol=lf

.github/workflows/run.yml

@@ -66,6 +66,7 @@ jobs:
       - run: dfetch update
       - run: dfetch update
       - run: dfetch update-patch
+      - run: dfetch replay-patches
       - run: dfetch format-patch
       - run: dfetch report -t sbom
       - run: dfetch remove test-repo
@@ -211,6 +212,7 @@ jobs:
       - run: dfetch update
       - run: dfetch update
       - run: dfetch update-patch
+      - run: dfetch replay-patches
       - run: dfetch format-patch
       - run: dfetch report -t sbom
       - run: dfetch remove test-repo

CHANGELOG.rst

@@ -1,3 +1,8 @@
+Release 0.15.0 (unreleased)
+==============================
+
+* Add ``replay-patches`` command to step through patch contributions interactively (#1290)
+
 Release 0.14.4 (released 2026-08-28)
 ====================================
 
@@ -17,7 +22,6 @@ Release 0.14.2 (released 2026-06-21)
 
 Release 0.14.1 (released 2026-06-19)
 ====================================
-
 * Implement C-043: add ``pip-audit`` OSV gate to the release workflow
 * Add CRA Compliance: OSCAL 1.2.2 Component Definition
 * Fix ``dfetch import`` mangling the namespace of a generic VCS URL whose path contains ``.git`` (#1268)

dfetch/__main__.py

@@ -18,6 +18,7 @@
 import dfetch.commands.import_
 import dfetch.commands.init
 import dfetch.commands.remove
+import dfetch.commands.replay_patches
 import dfetch.commands.report
 import dfetch.commands.update
 import dfetch.commands.update_patch
@@ -56,6 +57,7 @@ def create_parser() -> argparse.ArgumentParser:
     dfetch.commands.remove.Remove.create_menu(subparsers)
     dfetch.commands.report.Report.create_menu(subparsers)
     dfetch.commands.update.Update.create_menu(subparsers)
+    dfetch.commands.replay_patches.ReplayPatches.create_menu(subparsers)
     dfetch.commands.update_patch.UpdatePatch.create_menu(subparsers)
     dfetch.commands.validate.Validate.create_menu(subparsers)
 

dfetch/commands/command.py

@@ -5,8 +5,14 @@
 import sys
 from abc import ABC, abstractmethod
 from argparse import ArgumentParser  # pylint: disable=unused-import
+from collections.abc import Callable
 from typing import TYPE_CHECKING, TypeVar
 
+from dfetch.log import get_logger
+from dfetch.manifest.project import ProjectEntry
+from dfetch.project.superproject import SuperProject
+from dfetch.util.util import in_directory
+
 if TYPE_CHECKING and sys.version_info >= (3, 10):
     from typing import TypeAlias
 
@@ -18,6 +24,8 @@
         argparse._SubParsersAction  # pyright: ignore[reportPrivateUsage] #pylint: disable=protected-access
     )
 
+_command_logger = get_logger(__name__)
+
 
 def pascal_to_kebab(name: str) -> str:
     """Insert a dash before each uppercase letter (except the first) and lowercase everything."""
@@ -60,6 +68,24 @@ def __call__(self, args: argparse.Namespace) -> None:
             NotImplementedError: This is an abstract method that should be implemented by a subclass.
         """
 
+    @staticmethod
+    def _iter_projects(
+        superproject: SuperProject,
+        project_names: list[str],
+        process: Callable[[ProjectEntry], None],
+    ) -> None:
+        """Iterate over selected projects, log per-project errors, re-raise if any failed."""
+        had_errors = False
+        with in_directory(superproject.root_directory):
+            for project in superproject.manifest.selected_projects(project_names):
+                try:
+                    process(project)
+                except RuntimeError as exc:
+                    _command_logger.print_error_line(project.name, str(exc))
+                    had_errors = True
+        if had_errors:
+            raise RuntimeError()
+
     @staticmethod
     def parser(
         subparsers: SubparserActionType,