In commentary, do not use ` to quote.

16 files changed, 22 insertions, 22 deletions

diff --git a/m4/absolute-header.m4 b/m4/absolute-header.m4
index e073917502..8a91d20576 100644
--- a/m4/absolute-header.m4
+++ b/m4/absolute-header.m4
@@ -10,12 +10,12 @@ dnl From Derek Price.
 # ---------------------------------------
 # Find the absolute name of a header file, testing first if the header exists.
 # If the header were sys/inttypes.h, this macro would define
-# ABSOLUTE_SYS_INTTYPES_H to the `""' quoted absolute name of sys/inttypes.h
+# ABSOLUTE_SYS_INTTYPES_H to the '""' quoted absolute name of sys/inttypes.h
 # in config.h
-# (e.g. `#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
+# (e.g. '#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
 # The three "///" are to pacify Sun C 5.8, which otherwise would say
 # "warning: #include of /usr/include/... may be non-portable".
-# Use `""', not `<>', so that the /// cannot be confused with a C99 comment.
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
 # Note: This macro assumes that the header file is not empty after
 # preprocessing, i.e. it does not only define preprocessor macros but also
 # provides some type/enum definitions or function/variable declarations.
diff --git a/m4/acl.m4 b/m4/acl.m4
index f850741d36..3ce4d180c3 100644
--- a/m4/acl.m4
+++ b/m4/acl.m4
@@ -140,7 +140,7 @@ int type = ACL_TYPE_EXTENDED;]])],
 
 # gl_ACL_GET_FILE(IF-WORKS, IF-NOT)
 # -------------------------------------
-# If `acl_get_file' works (does not have a particular bug),
+# If 'acl_get_file' works (does not have a particular bug),
 # run IF-WORKS, otherwise, IF-NOT.
 # This tests for a Darwin 8.7.0 bug, whereby acl_get_file returns NULL,
 # but sets errno = ENOENT for an existing file or directory.
diff --git a/m4/alloca.m4 b/m4/alloca.m4
index 905363c83e..656924be88 100644
--- a/m4/alloca.m4
+++ b/m4/alloca.m4
@@ -53,8 +53,8 @@ m4_version_prereq([2.69], [] ,[
 
 # _AC_LIBOBJ_ALLOCA
 # -----------------
-# Set up the LIBOBJ replacement of `alloca'.  Well, not exactly
-# AC_LIBOBJ since we actually set the output variable `ALLOCA'.
+# Set up the LIBOBJ replacement of 'alloca'.  Well, not exactly
+# AC_LIBOBJ since we actually set the output variable 'ALLOCA'.
 # Nevertheless, for Automake, AC_LIBSOURCES it.
 m4_define([_AC_LIBOBJ_ALLOCA],
 [# The SVR3 libPW and SVR4 libucb both contain incompatible functions
diff --git a/m4/ansi-c++.m4 b/m4/ansi-c++.m4
index b64026f4c9..5c3ddc6e35 100644
--- a/m4/ansi-c++.m4
+++ b/m4/ansi-c++.m4
@@ -119,8 +119,8 @@ EOF
   if test "$$1" != no; then
     dnl This macro invocation resolves an automake error:
     dnl /usr/local/share/automake-1.11/am/depend2.am: am__fastdepCXX does not appear in AM_CONDITIONAL
-    dnl /usr/local/share/automake-1.11/am/depend2.am:   The usual way to define `am__fastdepCXX' is to add `AC_PROG_CXX'
-    dnl /usr/local/share/automake-1.11/am/depend2.am:   to `configure.ac' and run `aclocal' and `autoconf' again.
+    dnl /usr/local/share/automake-1.11/am/depend2.am:   The usual way to define 'am__fastdepCXX' is to add 'AC_PROG_CXX'
+    dnl /usr/local/share/automake-1.11/am/depend2.am:   to 'configure.ac' and run 'aclocal' and 'autoconf' again.
     _AM_DEPENDENCIES([CXX])
   else
     AM_CONDITIONAL([am__fastdepCXX], [false])
diff --git a/m4/bison.m4 b/m4/bison.m4
index 20260a8134..2c4afbe1b5 100644
--- a/m4/bison.m4
+++ b/m4/bison.m4
@@ -13,7 +13,7 @@ dnl
 dnl Declaring YACC & YFLAGS precious will not be necessary after GNULIB
 dnl requires an Autoconf greater than 2.59c, but it will probably still be
 dnl useful to override the description of YACC in the --help output, re
-dnl parse-datetime.y assuming `bison -y'.
+dnl parse-datetime.y assuming 'bison -y'.
   AC_ARG_VAR([YACC],
 [The "Yet Another C Compiler" implementation to use.  Defaults to 'bison -y'.
 Values other than 'bison -y' will most likely break on most systems.])dnl
diff --git a/m4/calloc.m4 b/m4/calloc.m4
index 781cf8ec33..bc61168c37 100644
--- a/m4/calloc.m4
+++ b/m4/calloc.m4
@@ -14,7 +14,7 @@
 
 # _AC_FUNC_CALLOC_IF([IF-WORKS], [IF-NOT])
 # -------------------------------------
-# If `calloc (0, 0)' is properly handled, run IF-WORKS, otherwise, IF-NOT.
+# If 'calloc (0, 0)' is properly handled, run IF-WORKS, otherwise, IF-NOT.
 AC_DEFUN([_AC_FUNC_CALLOC_IF],
 [
   AC_REQUIRE([AC_TYPE_SIZE_T])dnl
@@ -39,7 +39,7 @@ AC_DEFUN([_AC_FUNC_CALLOC_IF],
 
 # gl_FUNC_CALLOC_GNU
 # ------------------
-# Report whether `calloc (0, 0)' is properly handled, and replace calloc if
+# Report whether 'calloc (0, 0)' is properly handled, and replace calloc if
 # needed.
 AC_DEFUN([gl_FUNC_CALLOC_GNU],
 [
diff --git a/m4/fsusage.m4 b/m4/fsusage.m4
index 48c7736913..519743fb28 100644
--- a/m4/fsusage.m4
+++ b/m4/fsusage.m4
@@ -42,7 +42,7 @@ ac_fsusage_space=no
 # Perform only the link test since it seems there are no variants of the
 # statvfs function.  This check is more than just AC_CHECK_FUNCS([statvfs])
 # because that got a false positive on SCO OSR5.  Adding the declaration
-# of a `struct statvfs' causes this test to fail (as it should) on such
+# of a 'struct statvfs' causes this test to fail (as it should) on such
 # systems.  That system is reported to work fine with STAT_STATFS4 which
 # is what it gets when this test fails.
 if test $ac_fsusage_space = no; then
diff --git a/m4/getloadavg.m4 b/m4/getloadavg.m4
index e7c585435c..ad09c80d01 100644
--- a/m4/getloadavg.m4
+++ b/m4/getloadavg.m4
@@ -100,7 +100,7 @@ AC_CHECK_DECL([getloadavg], [], [HAVE_DECL_GETLOADAVG=0],
 
 # gl_PREREQ_GETLOADAVG
 # --------------------
-# Set up the AC_LIBOBJ replacement of `getloadavg'.
+# Set up the AC_LIBOBJ replacement of 'getloadavg'.
 AC_DEFUN([gl_PREREQ_GETLOADAVG],
 [
 # Figure out what our getloadavg.c needs.
diff --git a/m4/gettext.m4 b/m4/gettext.m4
index db8a7fe30e..5415f88ef0 100644
--- a/m4/gettext.m4
+++ b/m4/gettext.m4
@@ -35,7 +35,7 @@ dnl    will be ignored.  If NEEDSYMBOL is specified and is
 dnl    'need-formatstring-macros', then GNU gettext implementations that don't
 dnl    support the ISO C 99 <inttypes.h> formatstring macros will be ignored.
 dnl INTLDIR is used to find the intl libraries.  If empty,
-dnl    the value `$(top_builddir)/intl/' is used.
+dnl    the value '$(top_builddir)/intl/' is used.
 dnl
 dnl The result of the configuration is one of three cases:
 dnl 1) GNU gettext, as included in the intl subdirectory, will be compiled
diff --git a/m4/include_next.m4 b/m4/include_next.m4
index 6593e03dc7..a60a2614dc 100644
--- a/m4/include_next.m4
+++ b/m4/include_next.m4
@@ -143,7 +143,7 @@ choke me
 # even if the compiler does not support include_next.
 # The three "///" are to pacify Sun C 5.8, which otherwise would say
 # "warning: #include of /usr/include/... may be non-portable".
-# Use `""', not `<>', so that the /// cannot be confused with a C99 comment.
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
 # Note: This macro assumes that the header file is not empty after
 # preprocessing, i.e. it does not only define preprocessor macros but also
 # provides some type/enum definitions or function/variable declarations.
diff --git a/m4/ls-mntd-fs.m4 b/m4/ls-mntd-fs.m4
index ed476d6968..c37f10e19e 100644
--- a/m4/ls-mntd-fs.m4
+++ b/m4/ls-mntd-fs.m4
@@ -70,7 +70,7 @@ AC_FUNC_GETMNTENT
 # with other getmntent implementations.
 
 # NOTE: Normally, I wouldn't use a check for system type as I've done for
-# `CRAY' below since that goes against the whole autoconf philosophy.  But
+# 'CRAY' below since that goes against the whole autoconf philosophy.  But
 # I think there is too great a chance that some non-Cray system has a
 # function named listmntent to risk the false positive.
 
diff --git a/m4/perl.m4 b/m4/perl.m4
index 0cf96bfcff..88b5e433f2 100644
--- a/m4/perl.m4
+++ b/m4/perl.m4
@@ -15,7 +15,7 @@ AC_DEFUN([gl_PERL],
   dnl FIXME: don't hard-code 5.005
   AC_MSG_CHECKING([for perl5.005 or newer])
   if test "${PERL+set}" = set; then
-    # `PERL' is set in the user's environment.
+    # 'PERL' is set in the user's environment.
     candidate_perl_names="$PERL"
     perl_specified=yes
   else
diff --git a/m4/physmem.m4 b/m4/physmem.m4
index cb221646e6..eb52f55370 100644
--- a/m4/physmem.m4
+++ b/m4/physmem.m4
@@ -6,7 +6,7 @@ dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 # Check for the external symbol, _system_configuration,
-# a struct with member `physmem'.
+# a struct with member 'physmem'.
 AC_DEFUN([gl_SYS__SYSTEM_CONFIGURATION],
   [AC_CACHE_CHECK([for external symbol _system_configuration],
                   gl_cv_var__system_configuration,
diff --git a/m4/posixver.m4 b/m4/posixver.m4
index c4b9ed3605..2a8b2e94f9 100644
--- a/m4/posixver.m4
+++ b/m4/posixver.m4
@@ -10,11 +10,11 @@ AC_DEFUN([gl_POSIXVER],
 ])
 
 # Set the default level of POSIX conformance at configure-time.
-# Build with `./configure DEFAULT_POSIX2_VERSION=199209 ...' to
+# Build with './configure DEFAULT_POSIX2_VERSION=199209 ...' to
 # support the older version, thus preserving portability with
 # scripts that use sort +1, tail +32, etc.
 # Note however, that this breaks tools that might run commands
-# like `sort +some-file' that conform with the newer standard.
+# like 'sort +some-file' that conform with the newer standard.
 AC_DEFUN([gl_DEFAULT_POSIX2_VERSION],
 [
   AC_MSG_CHECKING([for desired default level of POSIX conformance])
diff --git a/m4/time_h.m4 b/m4/time_h.m4
index dd4b52263a..b88da76463 100644
--- a/m4/time_h.m4
+++ b/m4/time_h.m4
@@ -25,7 +25,7 @@ AC_DEFUN([gl_HEADER_TIME_H_BODY],
   AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
 ])
 
-dnl Define HAVE_STRUCT_TIMESPEC if `struct timespec' is declared
+dnl Define HAVE_STRUCT_TIMESPEC if 'struct timespec' is declared
 dnl in time.h, sys/time.h, or pthread.h.
 
 AC_DEFUN([gl_CHECK_TYPE_STRUCT_TIMESPEC],
diff --git a/m4/utimbuf.m4 b/m4/utimbuf.m4
index b3dcd001ee..25eb85b326 100644
--- a/m4/utimbuf.m4
+++ b/m4/utimbuf.m4
@@ -9,7 +9,7 @@
 
 dnl From Jim Meyering
 
-dnl Define HAVE_STRUCT_UTIMBUF if `struct utimbuf' is declared --
+dnl Define HAVE_STRUCT_UTIMBUF if 'struct utimbuf' is declared --
 dnl usually in <utime.h>.
 dnl Some systems have utime.h but don't declare the struct anywhere.