diff --git a/.github/workflows/l10n.yml b/.github/workflows/l10n.yml
index e2c3dbdcb50f0c..95e55134bdbed4 100644
--- a/.github/workflows/l10n.yml
+++ b/.github/workflows/l10n.yml
@@ -63,7 +63,7 @@ jobs:
             origin \
             ${{ github.ref }} \
             $args
-      - uses: actions/setup-go@v5
+      - uses: actions/setup-go@v6
         with:
           go-version: '>=1.16'
           cache: false
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 816d5a34c4aa35..27ebf2c8cc2e64 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -298,7 +298,17 @@ jobs:
         path: build
     - name: Test
       shell: pwsh
-      run: meson test -C build --no-rebuild --print-errorlogs --slice "$(1+${{ matrix.nr }})/10"
+      run: ci/run-test-slice-meson.sh build ${{matrix.nr}} 10
+    - name: print test failures
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      shell: bash
+      run: ci/print-test-failures.sh
+    - name: Upload failed tests' directories
+      if: failure() && env.FAILED_TEST_ARTIFACTS != ''
+      uses: actions/upload-artifact@v4
+      with:
+        name: failed-tests-windows-meson-${{ matrix.nr }}
+        path: ${{env.FAILED_TEST_ARTIFACTS}}
 
   regular:
     name: ${{matrix.vector.jobname}} (${{matrix.vector.pool}})
diff --git a/Documentation/RelNotes/2.53.0.adoc b/Documentation/RelNotes/2.53.0.adoc
index 7882bc59e80a92..70c4338675ae52 100644
--- a/Documentation/RelNotes/2.53.0.adoc
+++ b/Documentation/RelNotes/2.53.0.adoc
@@ -11,6 +11,8 @@ UI, Workflows & Features
    in a transaction by default, instead of emitting where each refs
    should point at and leaving the actual update to another command.
 
+ * "git blame" learns "--diff-algorithm=<algo>" option.
+
 
 Performance, Internal Implementation, Development Support etc.
 --------------------------------------------------------------
@@ -57,6 +59,43 @@ Fixes since v2.52
    corrected.
    (merge 7a03a10a3a jx/repo-struct-utf8width-fix later to maint).
 
+ * Yet another corner case fix around renames in the "ort" merge
+   strategy.
+   (merge a562d90a35 en/ort-rename-another-fix later to maint).
+
+ * Test leakfix.
+   (merge 14b561e768 jk/test-mktemp-leakfix later to maint).
+
+ * Update a version of action used at the GitHub Actrions CI.
+   (merge cd99203f86 js/ci-github-setup-go-update later to maint).
+
+ * The "return errno = EFOO, -1" construct, which is heavily used in
+   compat/mingw.c and triggers warnings under "-Wcomma", has been
+   rewritten to avoid the warnings.
+   (merge af3919816f js/mingw-assign-comma-fix later to maint).
+
+ * Makefile based build have recently been updated to build a
+   libgit.a that also has reftable and xdiff objects; CMake based
+   build procedure has been updated to match.
+   (merge b0d5c88cca js/cmake-libgit-fix later to maint).
+
+ * Under-allocation fix.
+   (merge d22a488482 js/wincred-get-credential-alloc-fix later to maint).
+
+ * "git worktree list" attempts to show paths to worktrees while
+   aligning them, but miscounted display columns for the paths when
+   non-ASCII characters were involved, which has been corrected.
+   (merge 08dfa59835 pw/worktree-list-display-width-fix later to maint).
+
+ * "Windows+meson" job at the GitHub Actions CI was hard to debug, as
+   it did not show and save failed test artifacts, which has been
+   corrected.
+   (merge 17bd1108ea jk/ci-windows-meson-test-fix later to maint).
+
+ * Emulation code clean-up.
+   (merge 2367c6bcd6 gf/win32-pthread-cond-wait-err later to maint).
+
  * Other code cleanup, docfix, build fix, etc.
    (merge 46207a54cc qj/doc-http-bad-want-response later to maint).
    (merge df90eccd93 kh/doc-commit-extra-references later to maint).
+   (merge f18aa68861 rs/xmkstemp-simplify later to maint).
diff --git a/Documentation/diff-algorithm-option.adoc b/Documentation/diff-algorithm-option.adoc
new file mode 100644
index 00000000000000..8e3a0b63d784d8
--- /dev/null
+++ b/Documentation/diff-algorithm-option.adoc
@@ -0,0 +1,20 @@
+`--diff-algorithm=(patience|minimal|histogram|myers)`::
+	Choose a diff algorithm. The variants are as follows:
++
+--
+   `default`;;
+   `myers`;;
+	The basic greedy diff algorithm. Currently, this is the default.
+   `minimal`;;
+	Spend extra time to make sure the smallest possible diff is
+	produced.
+   `patience`;;
+	Use "patience diff" algorithm when generating patches.
+   `histogram`;;
+	This algorithm extends the patience algorithm to "support
+	low-occurrence common elements".
+--
++
+For instance, if you configured the `diff.algorithm` variable to a
+non-default value and want to use the default one, then you
+have to use `--diff-algorithm=default` option.
diff --git a/Documentation/diff-options.adoc b/Documentation/diff-options.adoc
index ae31520f7f1d13..9cdad6f72a0c7d 100644
--- a/Documentation/diff-options.adoc
+++ b/Documentation/diff-options.adoc
@@ -197,26 +197,7 @@ and starts with _<text>_, this algorithm attempts to prevent it from
 appearing as a deletion or addition in the output. It uses the "patience
 diff" algorithm internally.
 
-`--diff-algorithm=(patience|minimal|histogram|myers)`::
-	Choose a diff algorithm. The variants are as follows:
-+
---
-   `default`;;
-   `myers`;;
-	The basic greedy diff algorithm. Currently, this is the default.
-   `minimal`;;
-	Spend extra time to make sure the smallest possible diff is
-	produced.
-   `patience`;;
-	Use "patience diff" algorithm when generating patches.
-   `histogram`;;
-	This algorithm extends the patience algorithm to "support
-	low-occurrence common elements".
---
-+
-For instance, if you configured the `diff.algorithm` variable to a
-non-default value and want to use the default one, then you
-have to use `--diff-algorithm=default` option.
+include::diff-algorithm-option.adoc[]
 
 `--stat[=<width>[,<name-width>[,<count>]]]`::
 	Generate a diffstat. By default, as much space as necessary
diff --git a/Documentation/git-blame.adoc b/Documentation/git-blame.adoc
index e438d286258826..adcbb6f5dc97a3 100644
--- a/Documentation/git-blame.adoc
+++ b/Documentation/git-blame.adoc
@@ -85,6 +85,8 @@ include::blame-options.adoc[]
 	Ignore whitespace when comparing the parent's version and
 	the child's to find where the lines came from.
 
+include::diff-algorithm-option.adoc[]
+
 --abbrev=<n>::
 	Instead of using the default 7+1 hexadecimal digits as the
 	abbreviated object name, use <m>+1 digits, where <m> is at
diff --git a/builtin/blame.c b/builtin/blame.c
index 2703820258d5f9..27b513d27faddd 100644
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -779,6 +779,19 @@ static int git_blame_config(const char *var, const char *value,
 		}
 	}
 
+	if (!strcmp(var, "diff.algorithm")) {
+		long diff_algorithm;
+		if (!value)
+			return config_error_nonbool(var);
+		diff_algorithm = parse_algorithm_value(value);
+		if (diff_algorithm < 0)
+			return error(_("unknown value for config '%s': %s"),
+				     var, value);
+		xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
+		xdl_opts |= diff_algorithm;
+		return 0;
+	}
+
 	if (git_diff_heuristic_config(var, value, cb) < 0)
 		return -1;
 	if (userdiff_config(var, value) < 0)
@@ -824,6 +837,38 @@ static int blame_move_callback(const struct option *option, const char *arg, int
 	return 0;
 }
 
+static int blame_diff_algorithm_minimal(const struct option *option,
+					const char *arg, int unset)
+{
+	int *opt = option->value;
+
+	BUG_ON_OPT_ARG(arg);
+
+	*opt &= ~XDF_DIFF_ALGORITHM_MASK;
+	if (!unset)
+		*opt |= XDF_NEED_MINIMAL;
+
+	return 0;
+}
+
+static int blame_diff_algorithm_callback(const struct option *option,
+					 const char *arg, int unset)
+{
+	int *opt = option->value;
+	long value = parse_algorithm_value(arg);
+
+	BUG_ON_OPT_NEG(unset);
+
+	if (value < 0)
+		return error(_("option diff-algorithm accepts \"myers\", "
+			       "\"minimal\", \"patience\" and \"histogram\""));
+
+	*opt &= ~XDF_DIFF_ALGORITHM_MASK;
+	*opt |= value;
+
+	return 0;
+}
+
 static int is_a_rev(const char *name)
 {
 	struct object_id oid;
@@ -915,11 +960,16 @@ int cmd_blame(int argc,
 		OPT_BIT('s', NULL, &output_option, N_("suppress author name and timestamp (Default: off)"), OUTPUT_NO_AUTHOR),
 		OPT_BIT('e', "show-email", &output_option, N_("show author email instead of name (Default: off)"), OUTPUT_SHOW_EMAIL),
 		OPT_BIT('w', NULL, &xdl_opts, N_("ignore whitespace differences"), XDF_IGNORE_WHITESPACE),
+		OPT_CALLBACK_F(0, "diff-algorithm", &xdl_opts, N_("<algorithm>"),
+			       N_("choose a diff algorithm"),
+			       PARSE_OPT_NONEG, blame_diff_algorithm_callback),
 		OPT_STRING_LIST(0, "ignore-rev", &ignore_rev_list, N_("rev"), N_("ignore <rev> when blaming")),
 		OPT_STRING_LIST(0, "ignore-revs-file", &ignore_revs_file_list, N_("file"), N_("ignore revisions from <file>")),
 		OPT_BIT(0, "color-lines", &output_option, N_("color redundant metadata from previous line differently"), OUTPUT_COLOR_LINE),
 		OPT_BIT(0, "color-by-age", &output_option, N_("color lines by age"), OUTPUT_SHOW_AGE_WITH_COLOR),
-		OPT_BIT(0, "minimal", &xdl_opts, N_("spend extra cycles to find better match"), XDF_NEED_MINIMAL),
+		OPT_CALLBACK_F(0, "minimal", &xdl_opts, NULL,
+			       N_("spend extra cycles to find a better match"),
+			       PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, blame_diff_algorithm_minimal),
 		OPT_STRING('S', NULL, &revs_file, N_("file"), N_("use revisions from <file> instead of calling git-rev-list")),
 		OPT_STRING(0, "contents", &contents_from, N_("file"), N_("use <file>'s contents as the final image")),
 		OPT_CALLBACK_F('C', NULL, &opt, N_("score"), N_("find line copies within and across files"), PARSE_OPT_OPTARG, blame_copy_callback),
diff --git a/builtin/worktree.c b/builtin/worktree.c
index b7f323b5e4d73e..fbdaf2eb2eb85c 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -975,14 +975,18 @@ static void show_worktree_porcelain(struct worktree *wt, int line_terminator)
 	fputc(line_terminator, stdout);
 }
 
-static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
+struct worktree_display {
+	char *path;
+	int width;
+};
+
+static void show_worktree(struct worktree *wt, struct worktree_display *display,
+			  int path_maxwidth, int abbrev_len)
 {
 	struct strbuf sb = STRBUF_INIT;
-	int cur_path_len = strlen(wt->path);
-	int path_adj = cur_path_len - utf8_strwidth(wt->path);
 	const char *reason;
 
-	strbuf_addf(&sb, "%-*s ", 1 + path_maxlen + path_adj, wt->path);
+	strbuf_addf(&sb, "%s%*s", display->path, 1 + path_maxwidth - display->width, "");
 	if (wt->is_bare)
 		strbuf_addstr(&sb, "(bare)");
 	else {
@@ -1016,20 +1020,27 @@ static void show_worktree(struct worktree *wt, int path_maxlen, int abbrev_len)
 	strbuf_release(&sb);
 }
 
-static void measure_widths(struct worktree **wt, int *abbrev, int *maxlen)
+static void measure_widths(struct worktree **wt, int *abbrev,
+			   struct worktree_display **d, int *maxwidth)
 {
-	int i;
+	int i, display_alloc = 0;
+	struct worktree_display *display = NULL;
+	struct strbuf buf = STRBUF_INIT;
 
 	for (i = 0; wt[i]; i++) {
 		int sha1_len;
-		int path_len = strlen(wt[i]->path);
+		ALLOC_GROW(display, i + 1, display_alloc);
+		quote_path(wt[i]->path, NULL, &buf, 0);
+		display[i].width = utf8_strwidth(buf.buf);
+		display[i].path = strbuf_detach(&buf, NULL);
 
-		if (path_len > *maxlen)
-			*maxlen = path_len;
+		if (display[i].width > *maxwidth)
+			*maxwidth = display[i].width;
 		sha1_len = strlen(repo_find_unique_abbrev(the_repository, &wt[i]->head_oid, *abbrev));
 		if (sha1_len > *abbrev)
 			*abbrev = sha1_len;
 	}
+	*d = display;
 }
 
 static int pathcmp(const void *a_, const void *b_)
@@ -1075,21 +1086,27 @@ static int list(int ac, const char **av, const char *prefix,
 		die(_("the option '%s' requires '%s'"), "-z", "--porcelain");
 	else {
 		struct worktree **worktrees = get_worktrees();
-		int path_maxlen = 0, abbrev = DEFAULT_ABBREV, i;
+		int path_maxwidth = 0, abbrev = DEFAULT_ABBREV, i;
+		struct worktree_display *display = NULL;
 
 		/* sort worktrees by path but keep main worktree at top */
 		pathsort(worktrees + 1);
 
 		if (!porcelain)
-			measure_widths(worktrees, &abbrev, &path_maxlen);
+			measure_widths(worktrees, &abbrev,
+				       &display, &path_maxwidth);
 
 		for (i = 0; worktrees[i]; i++) {
 			if (porcelain)
 				show_worktree_porcelain(worktrees[i],
 							line_terminator);
 			else
-				show_worktree(worktrees[i], path_maxlen, abbrev);
+				show_worktree(worktrees[i],
+					      &display[i], path_maxwidth, abbrev);
 		}
+		for (i = 0; display && worktrees[i]; i++)
+			free(display[i].path);
+		free(display);
 		free_worktrees(worktrees);
 	}
 	return 0;
diff --git a/ci/run-test-slice-meson.sh b/ci/run-test-slice-meson.sh
new file mode 100755
index 00000000000000..961c94fba0b2ee
--- /dev/null
+++ b/ci/run-test-slice-meson.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# We must load the build options so we know where to find
+# things like TEST_OUTPUT_DIRECTORY. This has to come before
+# loading lib.sh, though, because it may clobber some CI lib
+# variables like our custom GIT_TEST_OPTS.
+. "$1"/GIT-BUILD-OPTIONS
+. ${0%/*}/lib.sh
+
+group "Run tests" \
+	meson test -C "$1" --no-rebuild --print-errorlogs \
+		--test-args="$GIT_TEST_OPTS" --slice "$((1+$2))/$3" ||
+handle_failed_tests
diff --git a/compat/mingw.c b/compat/mingw.c
index 736a07a028ab4d..90ba5cea9d3ace 100644
--- a/compat/mingw.c
+++ b/compat/mingw.c
@@ -491,8 +491,10 @@ static int mingw_open_append(wchar_t const *wfilename, int oflags, ...)
 	DWORD create = (oflags & O_CREAT) ? OPEN_ALWAYS : OPEN_EXISTING;
 
 	/* only these flags are supported */
-	if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND))
-		return errno = ENOSYS, -1;
+	if ((oflags & ~O_CREAT) != (O_WRONLY | O_APPEND)) {
+		errno = ENOSYS;
+		return -1;
+	}
 
 	/*
 	 * FILE_SHARE_WRITE is required to permit child processes
@@ -2450,12 +2452,14 @@ static int start_timer_thread(void)
 	timer_event = CreateEvent(NULL, FALSE, FALSE, NULL);
 	if (timer_event) {
 		timer_thread = (HANDLE) _beginthreadex(NULL, 0, ticktack, NULL, 0, NULL);
-		if (!timer_thread )
-			return errno = ENOMEM,
-				error("cannot start timer thread");
-	} else
-		return errno = ENOMEM,
-			error("cannot allocate resources for timer");
+		if (!timer_thread ) {
+			errno = ENOMEM;
+			return error("cannot start timer thread");
+		}
+	} else {
+		errno = ENOMEM;
+		return error("cannot allocate resources for timer");
+	}
 	return 0;
 }
 
@@ -2488,13 +2492,15 @@ int setitimer(int type UNUSED, struct itimerval *in, struct itimerval *out)
 	static const struct timeval zero;
 	static int atexit_done;
 
-	if (out)
-		return errno = EINVAL,
-			error("setitimer param 3 != NULL not implemented");
+	if (out) {
+		errno = EINVAL;
+		return error("setitimer param 3 != NULL not implemented");
+	}
 	if (!is_timeval_eq(&in->it_interval, &zero) &&
-	    !is_timeval_eq(&in->it_interval, &in->it_value))
-		return errno = EINVAL,
-			error("setitimer: it_interval must be zero or eq it_value");
+	    !is_timeval_eq(&in->it_interval, &in->it_value)) {
+		errno = EINVAL;
+		return error("setitimer: it_interval must be zero or eq it_value");
+	}
 
 	if (timer_thread)
 		stop_timer_thread();
@@ -2516,12 +2522,14 @@ int sigaction(int sig, struct sigaction *in, struct sigaction *out)
 {
 	if (sig == SIGCHLD)
 		return -1;
-	else if (sig != SIGALRM)
-		return errno = EINVAL,
-			error("sigaction only implemented for SIGALRM");
-	if (out)
-		return errno = EINVAL,
-			error("sigaction: param 3 != NULL not implemented");
+	else if (sig != SIGALRM) {
+		errno = EINVAL;
+		return error("sigaction only implemented for SIGALRM");
+	}
+	if (out) {
+		errno = EINVAL;
+		return error("sigaction: param 3 != NULL not implemented");
+	}
 
 	timer_fn = in->sa_handler;
 	return 0;
diff --git a/compat/win32/pthread.c b/compat/win32/pthread.c
index 58980a529c3eb9..7e93146963ec56 100644
--- a/compat/win32/pthread.c
+++ b/compat/win32/pthread.c
@@ -59,3 +59,10 @@ pthread_t pthread_self(void)
 	t.tid = GetCurrentThreadId();
 	return t;
 }
+
+int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex)
+{
+	if (SleepConditionVariableCS(cond, mutex, INFINITE) == 0)
+		return err_win_to_posix(GetLastError());
+	return 0;
+}
diff --git a/compat/win32/pthread.h b/compat/win32/pthread.h
index e2b5c4f64c9b91..859e1d9021c97c 100644
--- a/compat/win32/pthread.h
+++ b/compat/win32/pthread.h
@@ -36,7 +36,6 @@ typedef int pthread_mutexattr_t;
 
 #define pthread_cond_init(a,b) InitializeConditionVariable((a))
 #define pthread_cond_destroy(a) do {} while (0)
-#define pthread_cond_wait(a,b) return_0(SleepConditionVariableCS((a), (b), INFINITE))
 #define pthread_cond_signal WakeConditionVariable
 #define pthread_cond_broadcast WakeAllConditionVariable
 
@@ -64,6 +63,8 @@ int win32_pthread_join(pthread_t *thread, void **value_ptr);
 #define pthread_equal(t1, t2) ((t1).tid == (t2).tid)
 pthread_t pthread_self(void);
 
+int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex);
+
 static inline void NORETURN pthread_exit(void *ret)
 {
 	_endthreadex((unsigned)(uintptr_t)ret);
diff --git a/contrib/buildsystems/CMakeLists.txt b/contrib/buildsystems/CMakeLists.txt
index edb0fc04ad7649..479163ab5cd3b5 100644
--- a/contrib/buildsystems/CMakeLists.txt
+++ b/contrib/buildsystems/CMakeLists.txt
@@ -679,18 +679,6 @@ list(APPEND libgit_SOURCES "${CMAKE_BINARY_DIR}/version-def.h")
 
 add_library(libgit ${libgit_SOURCES} ${compat_SOURCES})
 
-#libxdiff
-parse_makefile_for_sources(libxdiff_SOURCES ${CMAKE_SOURCE_DIR}/Makefile "XDIFF_OBJS")
-
-list(TRANSFORM libxdiff_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/")
-add_library(xdiff STATIC ${libxdiff_SOURCES})
-
-#reftable
-parse_makefile_for_sources(reftable_SOURCES ${CMAKE_SOURCE_DIR}/Makefile "REFTABLE_OBJS")
-
-list(TRANSFORM reftable_SOURCES PREPEND "${CMAKE_SOURCE_DIR}/")
-add_library(reftable STATIC ${reftable_SOURCES})
-
 if(WIN32)
 	add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/git.rc
 			COMMAND "${SH_EXE}" "${CMAKE_SOURCE_DIR}/GIT-VERSION-GEN"
@@ -720,7 +708,7 @@ endif()
 #link all required libraries to common-main
 add_library(common-main OBJECT ${CMAKE_SOURCE_DIR}/common-main.c)
 
-target_link_libraries(common-main libgit xdiff reftable ${ZLIB_LIBRARIES})
+target_link_libraries(common-main libgit ${ZLIB_LIBRARIES})
 if(Intl_FOUND)
 	target_link_libraries(common-main ${Intl_LIBRARIES})
 endif()
diff --git a/contrib/credential/wincred/git-credential-wincred.c b/contrib/credential/wincred/git-credential-wincred.c
index 5683846b4b4d1f..73c2b9b72ab53e 100644
--- a/contrib/credential/wincred/git-credential-wincred.c
+++ b/contrib/credential/wincred/git-credential-wincred.c
@@ -165,7 +165,7 @@ static void get_credential(void)
 			write_item("username", creds[i]->UserName,
 				creds[i]->UserName ? wcslen(creds[i]->UserName) : 0);
 			if (creds[i]->CredentialBlobSize > 0) {
-				secret = xmalloc(creds[i]->CredentialBlobSize);
+				secret = xmalloc(creds[i]->CredentialBlobSize + sizeof(WCHAR));
 				wcsncpy_s(secret, creds[i]->CredentialBlobSize, (LPCWSTR)creds[i]->CredentialBlob, creds[i]->CredentialBlobSize / sizeof(WCHAR));
 				line = wcstok_s(secret, L"\r\n", &remaining_lines);
 				write_item("password", line, line ? wcslen(line) : 0);
diff --git a/diff.c b/diff.c
index efa8d9773c27f4..915317025f25e5 100644
--- a/diff.c
+++ b/diff.c
@@ -3530,7 +3530,6 @@ static int set_diff_algorithm(struct diff_options *opts,
 		return -1;
 
 	/* clear out previous settings */
-	DIFF_XDL_CLR(opts, NEED_MINIMAL);
 	opts->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
 	opts->xdl_opts |= value;
 
diff --git a/gitk-git/gitk b/gitk-git/gitk
index c02db0194d5317..7f62c8041d1c77 100755
--- a/gitk-git/gitk
+++ b/gitk-git/gitk
@@ -2131,12 +2131,14 @@ proc ttk_toplevel {w args} {
     return $w
 }
 
-proc make_transient {window origin} {
+proc make_transient {window origin {geometry ""}} {
     wm transient $window $origin
 
-    # Windows fails to place transient windows normally, so
-    # schedule a callback to center them on the parent.
-    if {[tk windowingsystem] eq {win32}} {
+    if {$geometry ne ""} {
+        after idle [list wm geometry $window $geometry]
+    } elseif {[tk windowingsystem] eq {win32}} {
+        # Windows fails to place transient windows normally, so
+        # schedule a callback to center them on the parent.
         after idle [list tk::PlaceWindow $window widget $origin]
     }
 }
@@ -2723,17 +2725,9 @@ proc makewindow {} {
     .pwbottom add .bright
     .ctop add .pwbottom
 
-    # restore window width & height if known
+    # restore window position if known
     if {[info exists geometry(main)]} {
-        if {[scan $geometry(main) "%dx%d" w h] >= 2} {
-            if {$w > [winfo screenwidth .]} {
-                set w [winfo screenwidth .]
-            }
-            if {$h > [winfo screenheight .]} {
-                set h [winfo screenheight .]
-            }
-            wm geometry . "${w}x$h"
-        }
+        wm geometry . "$geometry(main)"
     }
 
     if {[info exists geometry(state)] && $geometry(state) eq "zoomed"} {
@@ -3073,6 +3067,11 @@ proc savestuff {w} {
         puts $f "set geometry(pwsash1) \"[.tf.histframe.pwclist sashpos 1] 1\""
         puts $f "set geometry(botwidth) [winfo width .bleft]"
         puts $f "set geometry(botheight) [winfo height .bleft]"
+        unset -nocomplain geometry
+        global geometry
+        if {[info exists geometry(showrefs)]} {
+            puts $f "set geometry(showrefs) $geometry(showrefs)"
+        }
 
         array set view_save {}
         array set views {}
@@ -3788,6 +3787,34 @@ proc external_diff_get_one_file {diffid filename diffdir} {
                "revision $diffid"]
 }
 
+proc check_for_renames_in_diff {filepath} { # renames
+    global difffilestart ctext
+
+    set filename [file tail $filepath]
+    set renames {}
+
+    foreach loc $difffilestart {
+        set loclineend [string map {.0 .end} $loc]
+        set fromlineloc "$loc + 2 lines"
+        set tolineloc "$loc + 3 lines"
+        set renfromline [$ctext get $fromlineloc [string map {.0 .end} $fromlineloc]]
+        set rentoline [$ctext get $tolineloc [string map {.0 .end} $tolineloc]]
+        if {[string equal -length 12 "rename from " $renfromline]
+            && [string equal -length 10 "rename to " $rentoline]} {
+            set renfrom [string range $renfromline 12 end]
+            set rento [string range $rentoline 10 end]
+            if {[string first $filename $renfrom] != -1
+                || [string first $filename $rento] != -1} {
+                lappend renames $renfrom
+                lappend renames $rento
+                break
+            }
+        }
+    }
+
+    return $renames
+}
+
 proc external_diff {} {
     global nullid nullid2
     global flist_menu_file
@@ -3818,8 +3845,16 @@ proc external_diff {} {
     if {$diffdir eq {}} return
 
     # gather files to diff
-    set difffromfile [external_diff_get_one_file $diffidfrom $flist_menu_file $diffdir]
-    set difftofile [external_diff_get_one_file $diffidto $flist_menu_file $diffdir]
+    set renames [check_for_renames_in_diff $flist_menu_file]
+    set renamefrom [lindex $renames 0]
+    set renameto [lindex $renames 1]
+    if {$renamefrom ne {} && $renameto ne {}} {
+        set difffromfile [external_diff_get_one_file $diffidfrom $renamefrom $diffdir]
+        set difftofile [external_diff_get_one_file $diffidto $renameto $diffdir]
+    } else {
+        set difffromfile [external_diff_get_one_file $diffidfrom $flist_menu_file $diffdir]
+        set difftofile [external_diff_get_one_file $diffidto $flist_menu_file $diffdir]
+    }
 
     if {$difffromfile ne {} && $difftofile ne {}} {
         set cmd [list [shellsplit $extdifftool] $difffromfile $difftofile]
@@ -8296,7 +8331,7 @@ proc parseblobdiffline {ids line} {
         if {![regexp {^diff (--cc|--git) } $line m type]} {
             set line [convertfrom utf-8 $line]
             $ctext insert end "$line\n" hunksep
-            continue
+            return
         }
         # start of a new file
         set diffinhdr 1
@@ -8401,6 +8436,7 @@ proc parseblobdiffline {ids line} {
             if {$i >= 0} {
                 setinlist difffilestart $i $curdiffstart
             }
+            set line "rename from $fname"
         } elseif {![string compare -length 10 $line "rename to "] ||
                   ![string compare -length 8 $line "copy to "]} {
             set fname [string range $line [expr 4 + [string first " to " $line] ] end]
@@ -8408,6 +8444,13 @@ proc parseblobdiffline {ids line} {
                 set fname [lindex $fname 0]
             }
             makediffhdr $fname $ids
+            set line "[lindex $line 0] to $fname"
+        } elseif {![string compare -length 10 $line "copy from "]} {
+            set fname [string range $line 10 end]
+            if {[string index $fname 0] eq "\""} {
+                set fname [lindex $fname 0]
+            }
+            set line "copy from $fname"
         } elseif {[string compare -length 3 $line "---"] == 0} {
             # do nothing
             return
@@ -10160,6 +10203,7 @@ proc rmbranch {} {
 proc showrefs {} {
     global showrefstop bgcolor fgcolor selectbgcolor
     global bglist fglist reflistfilter reflist maincursor
+    global geometry
 
     set top .showrefs
     set showrefstop $top
@@ -10170,7 +10214,11 @@ proc showrefs {} {
     }
     ttk_toplevel $top
     wm title $top [mc "Tags and heads: %s" [file tail [pwd]]]
-    make_transient $top .
+    if {[info exists geometry(showrefs)]} {
+        make_transient $top . $geometry(showrefs)
+    } else {
+        make_transient $top .
+    }
     text $top.list -background $bgcolor -foreground $fgcolor \
         -selectbackground $selectbgcolor -font mainfont \
         -xscrollcommand "$top.xsb set" -yscrollcommand "$top.ysb set" \
@@ -10206,6 +10254,9 @@ proc showrefs {} {
     bind $top.list <ButtonRelease-1> {sel_reflist %W %x %y; break}
     set reflist {}
     refill_reflist
+    # avoid <Configure> being bound to child windows
+    bindtags $top [linsert [bindtags $top] 1 bind$top]
+    bind bind$top <Configure> {set geometry(showrefs) [wm geometry %W]}
 }
 
 proc sel_reflist {w x y} {
diff --git a/merge-ort.c b/merge-ort.c
index 29858074f9d8bf..9e85a5e60ae69f 100644
--- a/merge-ort.c
+++ b/merge-ort.c
@@ -2912,6 +2912,32 @@ static int process_renames(struct merge_options *opt,
 		if (!oldinfo || oldinfo->merged.clean)
 			continue;
 
+		/*
+		 * Rename caching from a previous commit might give us an
+		 * irrelevant rename for the current commit.
+		 *
+		 * Imagine:
+		 *     foo/A -> bar/A
+		 * was a cached rename for the upstream side from the
+		 * previous commit (without the directories being renamed),
+		 * but the next commit being replayed
+		 *     * does NOT add or delete files
+		 *     * does NOT have directory renames
+		 *     * does NOT modify any files under bar/
+		 *     * does NOT modify foo/A
+		 *     * DOES modify other files under foo/ (otherwise the
+		 *       !oldinfo check above would have already exited for
+		 *       us)
+		 * In such a case, our trivial directory resolution will
+		 * have already merged bar/, and our attempt to process
+		 * the cached
+		 *     foo/A -> bar/A
+		 * would be counterproductive, and lack the necessary
+		 * information anyway.  Skip such renames.
+		 */
+		if (!newinfo)
+			continue;
+
 		/*
 		 * diff_filepairs have copies of pathnames, thus we have to
 		 * use standard 'strcmp()' (negated) instead of '=='.
@@ -3438,7 +3464,7 @@ static int collect_renames(struct merge_options *opt,
 			continue;
 		}
 		if (opt->detect_directory_renames == MERGE_DIRECTORY_RENAMES_NONE &&
-		    p->status == 'R' && 1) {
+		    p->status == 'R') {
 			possibly_cache_new_pair(renames, p, side_index, NULL);
 			goto skip_directory_renames;
 		}
@@ -5118,7 +5144,8 @@ static void merge_check_renames_reusable(struct merge_options *opt,
 	 * optimization" comment near that case).
 	 *
 	 * This could be revisited in the future; see the commit message
-	 * where this comment was added for some possible pointers.
+	 * where this comment was added for some possible pointers, or the
+	 * later commit where this comment was added.
 	 */
 	if (opt->detect_directory_renames == MERGE_DIRECTORY_RENAMES_NONE) {
 		renames->cached_pairs_valid_side = 0; /* neither side valid */
@@ -5496,7 +5523,6 @@ int parse_merge_opt(struct merge_options *opt, const char *s)
 		if (value < 0)
 			return -1;
 		/* clear out previous settings */
-		DIFF_XDL_CLR(opt, NEED_MINIMAL);
 		opt->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK;
 		opt->xdl_opts |= value;
 	}
diff --git a/t/helper/test-mktemp.c b/t/helper/test-mktemp.c
index 22906889402933..da195640a9dcc8 100644
--- a/t/helper/test-mktemp.c
+++ b/t/helper/test-mktemp.c
@@ -6,10 +6,16 @@
 
 int cmd__mktemp(int argc, const char **argv)
 {
+	char *template;
+	int fd;
+
 	if (argc != 2)
 		usage("Expected 1 parameter defining the temporary file template");
+	template = xstrdup(argv[1]);
 
-	xmkstemp(xstrdup(argv[1]));
+	fd = xmkstemp(template);
 
+	close(fd);
+	free(template);
 	return 0;
 }
diff --git a/t/meson.build b/t/meson.build
index dc43d69636d15c..7c994d4643efe2 100644
--- a/t/meson.build
+++ b/t/meson.build
@@ -957,6 +957,7 @@ integration_tests = [
   't8012-blame-colors.sh',
   't8013-blame-ignore-revs.sh',
   't8014-blame-ignore-fuzzy.sh',
+  't8015-blame-diff-algorithm.sh',
   't8020-last-modified.sh',
   't9001-send-email.sh',
   't9002-column.sh',
diff --git a/t/t2402-worktree-list.sh b/t/t2402-worktree-list.sh
index 8ef1cad7f29d7d..e0c6abd2f58e20 100755
--- a/t/t2402-worktree-list.sh
+++ b/t/t2402-worktree-list.sh
@@ -29,23 +29,34 @@ test_expect_success 'rev-parse --git-path objects linked worktree' '
 	test_cmp expect actual
 '
 
-test_expect_success '"list" all worktrees from main' '
-	echo "$(git rev-parse --show-toplevel) $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
-	test_when_finished "rm -rf here out actual expect && git worktree prune" &&
-	git worktree add --detach here main &&
-	echo "$(git -C here rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
-	git worktree list >out &&
-	sed "s/  */ /g" <out >actual &&
+test_expect_success '"list" all worktrees from main core.quotepath=false' '
+	test_config core.quotepath false &&
+	echo "$(git rev-parse --show-toplevel)      $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
+	test_when_finished "rm -rf áááá out actual expect && git worktree prune" &&
+	git worktree add --detach áááá main &&
+	echo "$(git -C áááá rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
+	git worktree list >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success '"list" all worktrees from main core.quotepath=true' '
+	test_config core.quotepath true &&
+	echo "$(git rev-parse --show-toplevel)            $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
+	test_when_finished "rm -rf á out actual expect && git worktree prune" &&
+	git worktree add --detach á main &&
+	echo "\"$(git -C á rev-parse --show-toplevel)\" $(git rev-parse --short HEAD) (detached HEAD)" |
+		sed s/á/\\\\303\\\\241/g >>expect &&
+	git worktree list >actual &&
 	test_cmp expect actual
 '
 
 test_expect_success '"list" all worktrees from linked' '
-	echo "$(git rev-parse --show-toplevel) $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
-	test_when_finished "rm -rf here out actual expect && git worktree prune" &&
-	git worktree add --detach here main &&
-	echo "$(git -C here rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
-	git -C here worktree list >out &&
-	sed "s/  */ /g" <out >actual &&
+	test_config core.quotepath false &&
+	echo "$(git rev-parse --show-toplevel)      $(git rev-parse --short HEAD) [$(git symbolic-ref --short HEAD)]" >expect &&
+	test_when_finished "rm -rf áááá out actual expect && git worktree prune" &&
+	git worktree add --detach áááá main &&
+	echo "$(git -C áááá rev-parse --show-toplevel) $(git rev-parse --short HEAD) (detached HEAD)" >>expect &&
+	git -C áááá worktree list >actual &&
 	test_cmp expect actual
 '
 
diff --git a/t/t6429-merge-sequence-rename-caching.sh b/t/t6429-merge-sequence-rename-caching.sh
index 0f39ed0d08a342..15dd2d94b75f0a 100755
--- a/t/t6429-merge-sequence-rename-caching.sh
+++ b/t/t6429-merge-sequence-rename-caching.sh
@@ -11,14 +11,13 @@ test_description="remember regular & dir renames in sequence of merges"
 #         sure that we are triggering rename caching rather than rename
 #         bypassing.
 #
-# NOTE 2: this testfile uses 'test-tool fast-rebase' instead of either
-#         cherry-pick or rebase.  sequencer.c is only superficially
-#         integrated with merge-ort; it calls merge_switch_to_result()
-#         after EACH merge, which updates the index and working copy AND
-#         throws away the cached results (because merge_switch_to_result()
-#         is only supposed to be called at the end of the sequence).
-#         Integrating them more deeply is a big task, so for now the tests
-#         use 'test-tool fast-rebase'.
+# NOTE 2: this testfile uses replay instead of either cherry-pick or rebase.
+#         sequencer.c is only superficially integrated with merge-ort; it
+#         calls merge_switch_to_result() after EACH merge, which updates the
+#         index and working copy AND throws away the cached results (because
+#         merge_switch_to_result() is only supposed to be called at the end
+#         of the sequence).  Integrating them more deeply is a big task, so
+#         for now the tests use 'git replay'.
 #
 
 
@@ -769,4 +768,82 @@ test_expect_success 'avoid assuming we detected renames' '
 	)
 '
 
+#
+# In the following testcase:
+#   Base:     olddir/{valuesX_1, valuesY_1, valuesZ_1}
+#             other/content
+#   Upstream: rename olddir/valuesX_1 -> newdir/valuesX_2
+#   Topic_1:  modify olddir/valuesX_1 -> olddir/valuesX_3
+#   Topic_2:  modify olddir/valuesY,
+#             modify other/content
+#   Expected Pick1: olddir/{valuesY, valuesZ}, newdir/valuesX, other/content
+#   Expected Pick2: olddir/{valuesY, valuesZ}, newdir/valuesX, other/content
+#
+# This testcase presents no problems for git traditionally, but the fact that
+#    olddir/valuesX -> newdir/valuesX
+# gets cached after the first pick presents a problem for the second commit to
+# be replayed, because it appears to be an irrelevant rename, so the trivial
+# directory resolution will resolve newdir/ without recursing into it, giving
+# us no way to apply the cached rename to anything.
+#
+test_expect_success 'rename a file, use it on first pick, but irrelevant on second' '
+	git init rename_a_file_use_it_once_irrelevant_on_second &&
+	(
+		cd rename_a_file_use_it_once_irrelevant_on_second &&
+
+		mkdir olddir/ other/ &&
+		test_seq 3 8 >olddir/valuesX &&
+		test_seq 3 8 >olddir/valuesY &&
+		test_seq 3 8 >olddir/valuesZ &&
+		printf "%s\n" A B C D E F G >other/content &&
+		git add olddir other &&
+		git commit -m orig &&
+
+		git branch upstream &&
+		git branch topic &&
+
+		git switch upstream &&
+		test_seq 1 8 >olddir/valuesX &&
+		git add olddir &&
+		mkdir newdir &&
+		git mv olddir/valuesX newdir &&
+		git commit -m "Renamed (and modified) olddir/valuesX into newdir/" &&
+
+		git switch topic &&
+
+		test_seq 3 10 >olddir/valuesX &&
+		git add olddir &&
+		git commit -m A &&
+
+		test_seq 1 8 >olddir/valuesY &&
+		printf "%s\n" A B C D E F G H I >other/content &&
+		git add olddir/valuesY other &&
+		git commit -m B &&
+
+		#
+		# Actual testing; mostly we want to verify that we do not hit
+		#     git: merge-ort.c:3032: process_renames: Assertion `newinfo && !newinfo->merged.clean` failed.
+		#
+
+		git switch upstream &&
+		git config merge.directoryRenames true &&
+
+		git replay --onto HEAD upstream~1..topic >out &&
+
+		#
+		# ...but we may as well check that the replay gave us a reasonable result
+		#
+
+		git update-ref --stdin <out &&
+		git checkout topic &&
+
+		git ls-files >tracked &&
+		test_line_count = 4 tracked &&
+		test_path_is_file newdir/valuesX &&
+		test_path_is_file olddir/valuesY &&
+		test_path_is_file olddir/valuesZ &&
+		test_path_is_file other/content
+	)
+'
+
 test_done
diff --git a/t/t8015-blame-diff-algorithm.sh b/t/t8015-blame-diff-algorithm.sh
new file mode 100755
index 00000000000000..cd709536c6ecb1
--- /dev/null
+++ b/t/t8015-blame-diff-algorithm.sh
@@ -0,0 +1,203 @@
+#!/bin/sh
+
+test_description='git blame with specific diff algorithm'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+	cat >file.c <<-\EOF &&
+	int f(int x, int y)
+	{
+	  if (x == 0)
+	  {
+	    return y;
+	  }
+	  return x;
+	}
+
+	int g(size_t u)
+	{
+	  while (u < 30)
+	  {
+	    u++;
+	  }
+	  return u;
+	}
+	EOF
+	test_write_lines x x x x >file.txt &&
+	git add file.c file.txt &&
+	GIT_AUTHOR_NAME=Commit_1 git commit -m Commit_1 &&
+
+	cat >file.c <<-\EOF &&
+	int g(size_t u)
+	{
+	  while (u < 30)
+	  {
+	    u++;
+	  }
+	  return u;
+	}
+
+	int h(int x, int y, int z)
+	{
+	  if (z == 0)
+	  {
+	    return x;
+	  }
+	  return y;
+	}
+	EOF
+	test_write_lines x x x A B C D x E F G >file.txt &&
+	git add file.c file.txt &&
+	GIT_AUTHOR_NAME=Commit_2 git commit -m Commit_2
+'
+
+test_expect_success 'blame uses Myers diff algorithm by default' '
+	cat >expected <<-\EOF &&
+	Commit_2 int g(size_t u)
+	Commit_1 {
+	Commit_2   while (u < 30)
+	Commit_1   {
+	Commit_2     u++;
+	Commit_1   }
+	Commit_2   return u;
+	Commit_1 }
+	Commit_1
+	Commit_2 int h(int x, int y, int z)
+	Commit_1 {
+	Commit_2   if (z == 0)
+	Commit_1   {
+	Commit_2     return x;
+	Commit_1   }
+	Commit_2   return y;
+	Commit_1 }
+	EOF
+
+	git blame file.c >output &&
+	sed -e "s/^[^ ]* (\([^ ]*\) [^)]*)/\1/g" output >without_varying_parts &&
+	sed -e "s/ *$//g" without_varying_parts >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'blame honors --diff-algorithm option' '
+	cat >expected <<-\EOF &&
+	Commit_1 int g(size_t u)
+	Commit_1 {
+	Commit_1   while (u < 30)
+	Commit_1   {
+	Commit_1     u++;
+	Commit_1   }
+	Commit_1   return u;
+	Commit_1 }
+	Commit_2
+	Commit_2 int h(int x, int y, int z)
+	Commit_2 {
+	Commit_2   if (z == 0)
+	Commit_2   {
+	Commit_2     return x;
+	Commit_2   }
+	Commit_2   return y;
+	Commit_2 }
+	EOF
+
+	git blame file.c --diff-algorithm histogram >output &&
+	sed -e "s/^[^ ]* (\([^ ]*\) [^)]*)/\1/g" output >without_varying_parts &&
+	sed -e "s/ *$//g" without_varying_parts >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'blame honors diff.algorithm config variable' '
+	cat >expected <<-\EOF &&
+	Commit_1 int g(size_t u)
+	Commit_1 {
+	Commit_1   while (u < 30)
+	Commit_1   {
+	Commit_1     u++;
+	Commit_1   }
+	Commit_1   return u;
+	Commit_1 }
+	Commit_2
+	Commit_2 int h(int x, int y, int z)
+	Commit_2 {
+	Commit_2   if (z == 0)
+	Commit_2   {
+	Commit_2     return x;
+	Commit_2   }
+	Commit_2   return y;
+	Commit_2 }
+	EOF
+
+	git -c diff.algorithm=histogram blame file.c >output &&
+	sed -e "s/^[^ ]* (\([^ ]*\) [^)]*)/\1/g" \
+	    -e "s/ *$//g" output >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'blame gives priority to --diff-algorithm over diff.algorithm' '
+	cat >expected <<-\EOF &&
+	Commit_1 int g(size_t u)
+	Commit_1 {
+	Commit_1   while (u < 30)
+	Commit_1   {
+	Commit_1     u++;
+	Commit_1   }
+	Commit_1   return u;
+	Commit_1 }
+	Commit_2
+	Commit_2 int h(int x, int y, int z)
+	Commit_2 {
+	Commit_2   if (z == 0)
+	Commit_2   {
+	Commit_2     return x;
+	Commit_2   }
+	Commit_2   return y;
+	Commit_2 }
+	EOF
+
+	git -c diff.algorithm=myers blame file.c --diff-algorithm histogram >output &&
+	sed -e "s/^[^ ]* (\([^ ]*\) [^)]*)/\1/g" \
+	    -e "s/ *$//g" output >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'blame honors --minimal option' '
+	cat >expected <<-\EOF &&
+	Commit_1 x
+	Commit_1 x
+	Commit_1 x
+	Commit_2 A
+	Commit_2 B
+	Commit_2 C
+	Commit_2 D
+	Commit_1 x
+	Commit_2 E
+	Commit_2 F
+	Commit_2 G
+	EOF
+
+	git blame file.txt --minimal >output &&
+	sed -e "s/^[^ ]* (\([^ ]*\) [^)]*)/\1/g" output >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'blame respects the order of diff options' '
+	cat >expected <<-\EOF &&
+	Commit_1 x
+	Commit_1 x
+	Commit_1 x
+	Commit_2 A
+	Commit_2 B
+	Commit_2 C
+	Commit_2 D
+	Commit_2 x
+	Commit_2 E
+	Commit_2 F
+	Commit_2 G
+	EOF
+
+	git blame file.txt --minimal --diff-algorithm myers >output &&
+	sed -e "s/^[^ ]* (\([^ ]*\) [^)]*)/\1/g" output >actual &&
+	test_cmp expected actual
+'
+
+test_done
diff --git a/t/unit-tests/unit-test.c b/t/unit-tests/unit-test.c
index 5af645048adf4e..752fb38fb324a1 100644
--- a/t/unit-tests/unit-test.c
+++ b/t/unit-tests/unit-test.c
@@ -29,6 +29,7 @@ int cmd_main(int argc, const char **argv)
 		OPT_NOOP_NOARG('d', "debug"),
 		OPT_NOOP_NOARG(0, "github-workflow-markup"),
 		OPT_NOOP_NOARG(0, "no-bin-wrappers"),
+		OPT_NOOP_ARG(0, "no-chain-lint"),
 		OPT_NOOP_ARG(0, "root"),
 		OPT_NOOP_ARG(0, "stress"),
 		OPT_NOOP_NOARG(0, "tee"),
diff --git a/wrapper.c b/wrapper.c
index 3d507d42045203..d5976b3e7ec58b 100644
--- a/wrapper.c
+++ b/wrapper.c
@@ -421,24 +421,7 @@ FILE *fopen_or_warn(const char *path, const char *mode)
 
 int xmkstemp(char *filename_template)
 {
-	int fd;
-	char origtemplate[PATH_MAX];
-	strlcpy(origtemplate, filename_template, sizeof(origtemplate));
-
-	fd = mkstemp(filename_template);
-	if (fd < 0) {
-		int saved_errno = errno;
-		const char *nonrelative_template;
-
-		if (strlen(filename_template) != strlen(origtemplate))
-			filename_template = origtemplate;
-
-		nonrelative_template = absolute_path(filename_template);
-		errno = saved_errno;
-		die_errno("Unable to create temporary file '%s'",
-			nonrelative_template);
-	}
-	return fd;
+	return xmkstemp_mode(filename_template, 0600);
 }
 
 /* Adapted from libiberty's mkstemp.c. */
diff --git a/xdiff/xdiff.h b/xdiff/xdiff.h
index 2cecde5afe5da1..dc370712e92860 100644
--- a/xdiff/xdiff.h
+++ b/xdiff/xdiff.h
@@ -43,7 +43,7 @@ extern "C" {
 
 #define XDF_PATIENCE_DIFF (1 << 14)
 #define XDF_HISTOGRAM_DIFF (1 << 15)
-#define XDF_DIFF_ALGORITHM_MASK (XDF_PATIENCE_DIFF | XDF_HISTOGRAM_DIFF)
+#define XDF_DIFF_ALGORITHM_MASK (XDF_PATIENCE_DIFF | XDF_HISTOGRAM_DIFF | XDF_NEED_MINIMAL)
 #define XDF_DIFF_ALG(x) ((x) & XDF_DIFF_ALGORITHM_MASK)
 
 #define XDF_INDENT_HEURISTIC (1 << 23)