diff --git a/src/option.h b/src/option.h
index acb23de..566a561 100644
--- a/src/option.h
+++ b/src/option.h
@@ -19,26 +19,30 @@
 # endif
 #endif
 
-/* default values for p_efm 'errorformat' */
+/*
+ * Default values for 'errorformat'.
+ * The "%f|%l| %m" one is used for when the contents of the quickfix window is
+ * written to a file.
+ */
 #ifdef AMIGA
-# define DFLT_EFM	"%f>%l:%c:%t:%n:%m,%f:%l: %t%*\\D%n: %m,%f %l %t%*\\D%n: %m,%*[^\"]\"%f\"%*\\D%l: %m,%f:%l:%m"
+# define DFLT_EFM	"%f>%l:%c:%t:%n:%m,%f:%l: %t%*\\D%n: %m,%f %l %t%*\\D%n: %m,%*[^\"]\"%f\"%*\\D%l: %m,%f:%l:%m,%f|%l| %m"
 #else
 # if defined(MSDOS) || defined(WIN3264)
-#  define DFLT_EFM	"%f(%l) : %t%*\\D%n: %m,%*[^\"]\"%f\"%*\\D%l: %m,%f(%l) : %m,%*[^ ] %f %l: %m,%f:%l:%m"
+#  define DFLT_EFM	"%f(%l) : %t%*\\D%n: %m,%*[^\"]\"%f\"%*\\D%l: %m,%f(%l) : %m,%*[^ ] %f %l: %m,%f:%l:%m,%f|%l| %m"
 # else
 #  if defined(__EMX__)	/* put most common here (i.e. gcc format) at front */
-#   define DFLT_EFM	"%f:%l:%m,%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%f(%l:%c) : %m"
+#   define DFLT_EFM	"%f:%l:%m,%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%f(%l:%c) : %m,%f|%l| %m"
 #  else
 #   if defined(__QNX__)
-#    define DFLT_EFM	"%f(%l):%*[^WE]%t%*\\D%n:%m"
+#    define DFLT_EFM	"%f(%l):%*[^WE]%t%*\\D%n:%m,%f|%l| %m"
 #   else
 #    ifdef VMS
-#     define DFLT_EFM	"%A%p^,%C%%CC-%t-%m,%Cat line number %l in file %f"
+#     define DFLT_EFM	"%A%p^,%C%%CC-%t-%m,%Cat line number %l in file %f,%f|%l| %m"
 #    else /* Unix, probably */
 #     ifdef EBCDIC
-#define DFLT_EFM	"%*[^ ] %*[^ ] %f:%l%*[ ]%m,%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%f:%l:%m,\"%f\"\\, line %l%*\\D%c%*[^ ] %m,%D%*\\a[%*\\d]: Entering directory `%f',%X%*\\a[%*\\d]: Leaving directory `%f',%DMaking %*\\a in %f"
+#define DFLT_EFM	"%*[^ ] %*[^ ] %f:%l%*[ ]%m,%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%f:%l:%m,\"%f\"\\, line %l%*\\D%c%*[^ ] %m,%D%*\\a[%*\\d]: Entering directory `%f',%X%*\\a[%*\\d]: Leaving directory `%f',%DMaking %*\\a in %f,%f|%l| %m"
 #     else
-#define DFLT_EFM	"%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%-G%f:%l: (Each undeclared identifier is reported only once,%-G%f:%l: for each function it appears in.),%f:%l:%m,\"%f\"\\, line %l%*\\D%c%*[^ ] %m,%D%*\\a[%*\\d]: Entering directory `%f',%X%*\\a[%*\\d]: Leaving directory `%f',%DMaking %*\\a in %f"
+#define DFLT_EFM	"%*[^\"]\"%f\"%*\\D%l: %m,\"%f\"%*\\D%l: %m,%-G%f:%l: (Each undeclared identifier is reported only once,%-G%f:%l: for each function it appears in.),%f:%l:%m,\"%f\"\\, line %l%*\\D%c%*[^ ] %m,%D%*\\a[%*\\d]: Entering directory `%f',%X%*\\a[%*\\d]: Leaving directory `%f',%DMaking %*\\a in %f,%f|%l| %m"
 #     endif
 #    endif
 #   endif
@@ -445,6 +449,7 @@
 # define FDO_JUMP		0x400
 #endif
 EXTERN char_u	*p_fp;		/* 'formatprg' */
+EXTERN int	p_fs;		/* 'fsync' */
 EXTERN int	p_gd;		/* 'gdefault' */
 #ifdef FEAT_PRINTER
 EXTERN char_u	*p_pdev;	/* 'printdevice' */