convert all TABs to equivalent spaces in indentation

Using this file,

cat > leading-blank.exempt <<\EOF
(?:^|\/)ChangeLog[^/]*$
(?:^|\/)(?:GNU)?[Mm]akefile[^/]*$
\.(?:am|mk)$
EOF

run this command to convert all non-conforming leading white
space to be all spaces:

git ls-files \
  | pcregrep -vf leading-blank.exempt \
  | xargs pcregrep -l '^ *\t' \
  | xargs perl -MText::Tabs -ni -le \
    '$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'

1 files changed, 10 insertions, 10 deletions

diff --git a/tests/ere.awk b/tests/ere.awk
index 9a886bf5..90898a0b 100644
--- a/tests/ere.awk
+++ b/tests/ere.awk
@@ -5,21 +5,21 @@
 # notice and this notice are preserved.
 
 BEGIN {
-	FS="@";
-	n = 0;
-	printf ("# Generated Spencer ERE Test\n");
-	printf ("failures=0\n");
+        FS="@";
+        n = 0;
+        printf ("# Generated Spencer ERE Test\n");
+        printf ("failures=0\n");
 }
 
 $0 ~ /^#/  { next; }
 
 NF == 3 {
 #	printf ("status=$(echo '%s' | { ${GREP} -E -e '%s' > /dev/null 2>&1; echo $?; cat >/dev/null; })\n",$3, $2);
-	printf ("status=$(echo '%s' | { ${GREP} -E -e '%s' > /dev/null 2>&1; echo $?;  })\n",$3, $2);
-	printf ("if test $status -ne %s ; then\n", $1);
-	printf ("\techo Spencer ere test \\#%d failed\n", ++n);
-	printf ("\tfailures=1\n");
-	printf ("fi\n");
+        printf ("status=$(echo '%s' | { ${GREP} -E -e '%s' > /dev/null 2>&1; echo $?;  })\n",$3, $2);
+        printf ("if test $status -ne %s ; then\n", $1);
+        printf ("\techo Spencer ere test \\#%d failed\n", ++n);
+        printf ("\tfailures=1\n");
+        printf ("fi\n");
 }
 
 NF == 4 {
@@ -32,7 +32,7 @@ NF == 4 {
 
 NF == 5 {
 # don't alarm the user for now
-	next;
+        next;
 }
 
 END { printf ("exit $failures\n"); }