Attempt to make whitespace a bit more consistent

.gitattributes

@@ -1,7 +1,7 @@
-.gitignore		export-ignore
-.gitattributes		export-ignore
+.gitignore              export-ignore
+.gitattributes          export-ignore
 
-update_version		export-ignore
+update_version          export-ignore
 
 *.sln text eol=crlf
 *.vcxproj text eol=crlf

COPYING

@@ -29,15 +29,15 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 Opusinfo is a fork of ogginfo from the vorbis-tools package
 (https://www.xiph.org). It is available under the GPL:
 
-		    GNU GENERAL PUBLIC LICENSE
-		       Version 2, June 1991
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
      59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
-			    Preamble
+                            Preamble
 
   The licenses for most software are designed to take away your
 freedom to share and change it.  By contrast, the GNU General Public
@@ -87,7 +87,7 @@ patent must be licensed for everyone's free use or not licensed at all.
   The precise terms and conditions for copying, distribution and
 modification follow.
 
-		    GNU GENERAL PUBLIC LICENSE
+                    GNU GENERAL PUBLIC LICENSE
    TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
 
   0. This License applies to any program or other work which contains
@@ -286,7 +286,7 @@ make exceptions for this.  Our decision will be guided by the two goals
 of preserving the free status of all derivatives of our free software and
 of promoting the sharing and reuse of software generally.
 
-			    NO WARRANTY
+                            NO WARRANTY
 
   11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
@@ -308,9 +308,9 @@ YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGES.
 
-		     END OF TERMS AND CONDITIONS
+                     END OF TERMS AND CONDITIONS
 
-	    How to Apply These Terms to Your New Programs
+            How to Apply These Terms to Your New Programs
 
   If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it

configure.ac

@@ -43,13 +43,13 @@ AC_CACHE_CHECK([for C/C++ restrict keyword], ac_cv_c_restrict,
    for ac_kw in __restrict __restrict__ _Restrict restrict; do
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
       [[typedef int * int_ptr;
-	int foo (int_ptr $ac_kw ip, int * $ac_kw baz[]) {
-	return ip[0];
+        int foo (int_ptr $ac_kw ip, int * $ac_kw baz[]) {
+        return ip[0];
        }]],
       [[int s[1];
-	int * $ac_kw t = s;
-	t[0] = 0;
-	return foo(t, (void *)0)]])],
+        int * $ac_kw t = s;
+        t[0] = 0;
+        return foo(t, (void *)0)]])],
       [ac_cv_c_restrict=$ac_kw])
      test "$ac_cv_c_restrict" != no && break
    done

m4/pkg.m4

@@ -1,6 +1,6 @@
 # pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
 # serial 1 (pkg-config-0.24)
-# 
+#
 # Copyright © 2004 Scott James Remnant <[email protected]>.
 #
 # This program is free software; you can redistribute it and/or modify
@@ -32,17 +32,17 @@ AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
 AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
 
 if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
-	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
+        AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
 fi
 if test -n "$PKG_CONFIG"; then
-	_pkg_min_version=m4_default([$1], [0.9.0])
-	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
-	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
-		AC_MSG_RESULT([yes])
-	else
-		AC_MSG_RESULT([no])
-		PKG_CONFIG=""
-	fi
+        _pkg_min_version=m4_default([$1], [0.9.0])
+        AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
+        if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+                AC_MSG_RESULT([yes])
+        else
+                AC_MSG_RESULT([no])
+                PKG_CONFIG=""
+        fi
 fi[]dnl
 ])# PKG_PROG_PKG_CONFIG
 
@@ -73,7 +73,7 @@ m4_define([_PKG_CONFIG],
  elif test -n "$PKG_CONFIG"; then
     PKG_CHECK_EXISTS([$3],
                      [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
-		     [pkg_failed=yes])
+                     [pkg_failed=yes])
  else
     pkg_failed=untried
 fi[]dnl
@@ -117,17 +117,17 @@ and $1[]_LIBS to avoid the need to call pkg-config.
 See the pkg-config man page for more details.])
 
 if test $pkg_failed = yes; then
-   	AC_MSG_RESULT([no])
+        AC_MSG_RESULT([no])
         _PKG_SHORT_ERRORS_SUPPORTED
         if test $_pkg_short_errors_supported = yes; then
-	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
-        else 
-	        $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
+                $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
+        else
+                $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
         fi
-	# Put the nasty error message in config.log where it belongs
-	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
+        # Put the nasty error message in config.log where it belongs
+        echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
 
-	m4_default([$4], [AC_MSG_ERROR(
+        m4_default([$4], [AC_MSG_ERROR(
 [Package requirements ($2) were not met:
 
 $$1_PKG_ERRORS
@@ -138,8 +138,8 @@ installed software in a non-standard prefix.
 _PKG_TEXT])
         ])
 elif test $pkg_failed = untried; then
-     	AC_MSG_RESULT([no])
-	m4_default([$4], [AC_MSG_FAILURE(
+        AC_MSG_RESULT([no])
+        m4_default([$4], [AC_MSG_FAILURE(
 [The pkg-config script could not be found or is too old.  Make sure it
 is in your PATH or set the PKG_CONFIG environment variable to the full
 path to pkg-config.
@@ -149,9 +149,9 @@ _PKG_TEXT
 To get pkg-config, see <https://pkg-config.freedesktop.org/>.])
         ])
 else
-	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
-	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
+        $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
+        $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
         AC_MSG_RESULT([yes])
-	$3
+        $3
 fi[]dnl
 ])# PKG_CHECK_MODULES