diff --git a/src/auto/configure b/src/auto/configure
index 842b000e23..0474792047 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -12146,7 +12146,7 @@ fi
 for ac_func in fchdir fchown fsync getcwd getpseudotty \
 	getpwent getpwnam getpwuid getrlimit gettimeofday getwd lstat \
 	memset mkdtemp nanosleep opendir putenv qsort readlink select setenv \
-	setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
+	getpgid setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
 	sigprocmask sigvec strcasecmp strerror strftime stricmp strncasecmp \
 	strnicmp strpbrk strtol tgetent towlower towupper iswupper \
 	usleep utime utimes
diff --git a/src/config.h.in b/src/config.h.in
index 38b0ccf53e..49ed596f47 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -158,7 +158,9 @@
 #undef HAVE_FCHOWN
 #undef HAVE_FSEEKO
 #undef HAVE_FSYNC
+#undef HAVE_FLOAT_FUNCS
 #undef HAVE_GETCWD
+#undef HAVE_GETPGID
 #undef HAVE_GETPSEUDOTTY
 #undef HAVE_GETPWENT
 #undef HAVE_GETPWNAM
@@ -167,13 +169,12 @@
 #undef HAVE_GETTIMEOFDAY
 #undef HAVE_GETWD
 #undef HAVE_ICONV
-#undef HAVE_NL_LANGINFO_CODESET
 #undef HAVE_LSTAT
 #undef HAVE_MEMSET
 #undef HAVE_MKDTEMP
 #undef HAVE_NANOSLEEP
+#undef HAVE_NL_LANGINFO_CODESET
 #undef HAVE_OPENDIR
-#undef HAVE_FLOAT_FUNCS
 #undef HAVE_PUTENV
 #undef HAVE_QSORT
 #undef HAVE_READLINK
diff --git a/src/configure.ac b/src/configure.ac
index bf6a94d2e7..0113f170fb 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -3694,7 +3694,7 @@ dnl Can only be used for functions that do not require any include.
 AC_CHECK_FUNCS(fchdir fchown fsync getcwd getpseudotty \
 	getpwent getpwnam getpwuid getrlimit gettimeofday getwd lstat \
 	memset mkdtemp nanosleep opendir putenv qsort readlink select setenv \
-	setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
+	getpgid setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
 	sigprocmask sigvec strcasecmp strerror strftime stricmp strncasecmp \
 	strnicmp strpbrk strtol tgetent towlower towupper iswupper \
 	usleep utime utimes)
diff --git a/src/diff.c b/src/diff.c
index 7b81feba7a..435269984e 100644
--- a/src/diff.c
+++ b/src/diff.c
@@ -906,6 +906,7 @@ ex_diffpatch(exarg_T *eap)
     int		browse_flag = cmdmod.browse;
 #endif
     stat_T	st;
+    char_u	*esc_name = NULL;
 
 #ifdef FEAT_BROWSE
     if (cmdmod.browse)
@@ -935,11 +936,14 @@ ex_diffpatch(exarg_T *eap)
     /* Get the absolute path of the patchfile, changing directory below. */
     fullname = FullName_save(eap->arg, FALSE);
 #endif
-    buflen = STRLEN(tmp_orig) + (
+    esc_name = vim_strsave_shellescape(
 # ifdef UNIX
-		    fullname != NULL ? STRLEN(fullname) :
+		    fullname != NULL ? fullname :
 # endif
-		    STRLEN(eap->arg)) + STRLEN(tmp_new) + 16;
+		    eap->arg, TRUE, TRUE);
+    if (esc_name == NULL)
+	goto theend;
+    buflen = STRLEN(tmp_orig) + STRLEN(esc_name) + STRLEN(tmp_new) + 16;
     buf = alloc((unsigned)buflen);
     if (buf == NULL)
 	goto theend;
@@ -977,17 +981,8 @@ ex_diffpatch(exarg_T *eap)
     {
 	/* Build the patch command and execute it.  Ignore errors.  Switch to
 	 * cooked mode to allow the user to respond to prompts. */
-	vim_snprintf((char *)buf, buflen,
-#ifdef UNIX
-		"patch -o %s %s < '%s'",
-#else
-		"patch -o %s %s < \"%s\"",
-#endif
-		tmp_new, tmp_orig,
-# ifdef UNIX
-		fullname != NULL ? fullname :
-# endif
-		eap->arg);
+	vim_snprintf((char *)buf, buflen, "patch -o %s %s < %s",
+						  tmp_new, tmp_orig, esc_name);
 #ifdef FEAT_AUTOCMD
 	block_autocmds();	/* Avoid ShellCmdPost stuff */
 #endif
@@ -1078,6 +1073,7 @@ theend:
 #ifdef UNIX
     vim_free(fullname);
 #endif
+    vim_free(esc_name);
 #ifdef FEAT_BROWSE
     vim_free(browseFile);
     cmdmod.browse = browse_flag;
diff --git a/src/os_unix.c b/src/os_unix.c
index c451e899ae..1ae9b3c6ff 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -3083,7 +3083,7 @@ executable_file(char_u *name)
 }
 
 /*
- * Return 1 if "name" can be found in $PATH and executed, 0 if not.
+ * Return TRUE if "name" can be found in $PATH and executed, FALSE if not.
  * If "use_path" is FALSE only check if "name" is executable.
  * Return -1 if unknown.
  */
@@ -5451,8 +5451,10 @@ mch_stop_job(job_T *job, char_u *how)
 
     /* TODO: have an option to only kill the process, not the group? */
     job_pid = job->jv_pid;
+#ifdef HAVE_GETPGID
     if (job_pid == getpgid(job_pid))
 	job_pid = -job_pid;
+#endif
 
     kill(job_pid, sig);
 
diff --git a/src/testdir/test3.in b/src/testdir/test3.in
index 9e66436e7d..c78a66ec13 100644
--- a/src/testdir/test3.in
+++ b/src/testdir/test3.in
@@ -970,7 +970,8 @@ break;
 /* end of AUTO */
 
 STARTTEST
-:set tw=0 wm=60 columns=80 noai fo=croq
+:set tw=0 noai fo=croq
+:let &wm = &columns - 20
 /serious/e
 a about life, the universe, and the rest
 ENDTEST
diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim
index c23e8a1da5..e09bcaa44f 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
@@ -319,7 +319,7 @@ func Test_diffpatch()
   new
   call assert_fails('diffpatch Xpatch', 'E816:')
 
-  for name in ['Xpatch', 'Xpatch$HOME']
+  for name in ['Xpatch', 'Xpatch$HOME', 'Xpa''tch']
     call setline(1, ['1', '2', '3'])
     if name != 'Xpatch'
       call rename('Xpatch', name)
diff --git a/src/version.c b/src/version.c
index 99f7e8b034..d3a72a086f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -779,6 +779,12 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    445,
+/**/
+    444,
+/**/
+    443,
 /**/
     442,
 /**/