doc: Untabify python scripts used for making man pages

These scripts fail with a TabError exception if 'python' is python3, as
mixing tabs and spaces in indentation is forbidden in python3.

2 files changed, 219 insertions, 219 deletions

diff --git a/newlib/doc/chapter-texi2docbook.py b/newlib/doc/chapter-texi2docbook.py
index eb606dc68..e21489b9a 100755
--- a/newlib/doc/chapter-texi2docbook.py
+++ b/newlib/doc/chapter-texi2docbook.py
@@ -19,25 +19,25 @@ def main():
     print ('<!DOCTYPE chapter PUBLIC "-//OASIS//DTD DocBook V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">')
 
     for l in sys.stdin.readlines():
-	l = l.rstrip()
-
-	# transform @file{foo} to <filename>foo</filename>
-	l = re.sub("@file{(.*?)}", "<filename>\\1</filename>", l)
-
-	if l.startswith("@node"):
-	    l = l.replace("@node", "", 1)
-	    l = l.strip()
-	    l = l.lower()
-	    if first_node:
-		print ('<chapter id="%s" xmlns:xi="http://www.w3.org/2001/XInclude">' % l.replace(' ', '_'))
-		first_node = False
-	elif l.startswith("@chapter "):
-	    l = l.replace("@chapter ", "", 1)
-	    print ('<title>%s</title>' % l)
-	elif l.startswith("@include "):
-	    l = l.replace("@include ", "", 1)
-	    l = l.replace(".def", ".xml", 1)
-	    print ('<xi:include href="%s"/>' % l.strip())
+        l = l.rstrip()
+
+        # transform @file{foo} to <filename>foo</filename>
+        l = re.sub("@file{(.*?)}", "<filename>\\1</filename>", l)
+
+        if l.startswith("@node"):
+            l = l.replace("@node", "", 1)
+            l = l.strip()
+            l = l.lower()
+            if first_node:
+                print ('<chapter id="%s" xmlns:xi="http://www.w3.org/2001/XInclude">' % l.replace(' ', '_'))
+                first_node = False
+        elif l.startswith("@chapter "):
+            l = l.replace("@chapter ", "", 1)
+            print ('<title>%s</title>' % l)
+        elif l.startswith("@include "):
+            l = l.replace("@include ", "", 1)
+            l = l.replace(".def", ".xml", 1)
+            print ('<xi:include href="%s"/>' % l.strip())
 
     print ('</chapter>')
 
diff --git a/newlib/doc/makedocbook.py b/newlib/doc/makedocbook.py
index 97255345d..92d0f279d 100755
--- a/newlib/doc/makedocbook.py
+++ b/newlib/doc/makedocbook.py
@@ -35,11 +35,11 @@ verbose = 0
 
 def dump(s, stage, threshold = 1):
     if verbose > threshold:
-	print('*' * 40, file=sys.stderr)
-	print(stage, file=sys.stderr)
-	print('*' * 40, file=sys.stderr)
-	print('%s' % s, file=sys.stderr)
-	print('*' * 40, file=sys.stderr)
+        print('*' * 40, file=sys.stderr)
+        print(stage, file=sys.stderr)
+        print('*' * 40, file=sys.stderr)
+        print('%s' % s, file=sys.stderr)
+        print('*' * 40, file=sys.stderr)
 
 #
 # Stage 1
@@ -48,7 +48,7 @@ def dump(s, stage, threshold = 1):
 def skip_whitespace_and_stars(i, src):
 
     while i < len(src) and (src[i].isspace() or (src[i] == '*' and src[i+1] != '/')):
-	i += 1
+        i += 1
 
     return i
 
@@ -60,37 +60,37 @@ def comment_contents_generator(src):
     i = 0
 
     while i < len(src) - 2:
-	if src[i] == '\n' and src[i+1] == '/' and src[i+2] == '*':
-	    i = i + 3
-
-	    i = skip_whitespace_and_stars(i, src)
-
-	    if src[i] == '.':
-		i += 1
-
-	    while i < len(src):
-		if src[i] == '\n':
-		    yield '\n'
-		    i += 1
-
-		    # allow a single blank line
-		    if i < len(src) and src[i] == '\n':
-			yield '\n'
-			i += 1
-
-		    i = skip_whitespace_and_stars(i, src)
-
-		elif src[i] == '*' and src[i+1] == '/':
-		    i = i + 2
-		    # If we have just output \n\n, this adds another blank line.
-		    # This is the only way a double blank line can occur.
-		    yield '\nEND\n'
-		    break
-		else:
-		    yield src[i]
-		    i += 1
-	else:
-	    i += 1
+        if src[i] == '\n' and src[i+1] == '/' and src[i+2] == '*':
+            i = i + 3
+
+            i = skip_whitespace_and_stars(i, src)
+
+            if src[i] == '.':
+                i += 1
+
+            while i < len(src):
+                if src[i] == '\n':
+                    yield '\n'
+                    i += 1
+
+                    # allow a single blank line
+                    if i < len(src) and src[i] == '\n':
+                        yield '\n'
+                        i += 1
+
+                    i = skip_whitespace_and_stars(i, src)
+
+                elif src[i] == '*' and src[i+1] == '/':
+                    i = i + 2
+                    # If we have just output \n\n, this adds another blank line.
+                    # This is the only way a double blank line can occur.
+                    yield '\nEND\n'
+                    break
+                else:
+                    yield src[i]
+                    i += 1
+        else:
+            i += 1
 
 def remove_noncomments(src):
     src = '\n' + src
@@ -107,7 +107,7 @@ def remove_noncomments(src):
 def iscommand(l):
     if re.match('^[A-Z_]{3,}\s*$', l):
 
-	return True
+        return True
     return False
 
 def command_block_generator(content):
@@ -115,12 +115,12 @@ def command_block_generator(content):
     text = ''
 
     for l in content.splitlines():
-	if iscommand(l):
-	    yield (command, text)
-	    command = l.rstrip()
-	    text = ''
-	else:
-	    text = text + l + '\n'
+        if iscommand(l):
+            yield (command, text)
+            command = l.rstrip()
+            text = ''
+        else:
+            text = text + l + '\n'
     yield (command, text)
 
 # Look for commands, which give instructions how to process the following input
@@ -142,17 +142,17 @@ def process(content):
 #  invoke each command on it's text
 def perform(processed):
     for i in processed:
-	c = i[0].rstrip()
-	t = i[1].strip() + '\n'
+        c = i[0].rstrip()
+        t = i[1].strip() + '\n'
 
-	if verbose:
-	    print("performing command '%s'" % c, file=sys.stderr)
+        if verbose:
+            print("performing command '%s'" % c, file=sys.stderr)
 
-	if c in command_dispatch_dict:
-	    command_dispatch_dict[c](c, t)
-	else:
-	    print("command '%s' is not recognized" % c, file=sys.stderr)
-	    # the text following an unrecognized command is discarded
+        if c in command_dispatch_dict:
+            command_dispatch_dict[c](c, t)
+        else:
+            print("command '%s' is not recognized" % c, file=sys.stderr)
+            # the text following an unrecognized command is discarded
 
 # FUNCTION (aka TYPEDEF)
 #
@@ -162,33 +162,33 @@ def function(c, l):
 
     l = l.strip()
     if verbose:
-	print('FUNCTION %s' % l, file=sys.stderr)
+        print('FUNCTION %s' % l, file=sys.stderr)
 
     separator = '---'
 
     if ';' in l:
-	# fpclassify has an unusual format we also need to handle
-	spliton = ';'
-	l = l.splitlines()[0]
+        # fpclassify has an unusual format we also need to handle
+        spliton = ';'
+        l = l.splitlines()[0]
     elif len(l.splitlines()) > 1:
-	# a few pages like mktemp have two '---' lines
-	spliton = ';'
-	o = ''
-	for i in l.splitlines():
-	     if separator in i:
-		 o += i + ';'
-	     else:
-		 o += i
-	l = o[:-1]
+        # a few pages like mktemp have two '---' lines
+        spliton = ';'
+        o = ''
+        for i in l.splitlines():
+             if separator in i:
+                 o += i + ';'
+             else:
+                 o += i
+        l = o[:-1]
     else:
-	spliton = '\n'
+        spliton = '\n'
 
     namelist = []
     descrlist = []
     for a in l.split(spliton):
-	(n, d) = a.split(separator, 1)
-	namelist = namelist + n.split(',')
-	descrlist = descrlist + [d]
+        (n, d) = a.split(separator, 1)
+        namelist = namelist + n.split(',')
+        descrlist = descrlist + [d]
 
     # only copysign and log1p use <[ ]> markup in descr,
     # only gets() uses << >> markup
@@ -201,17 +201,17 @@ def function(c, l):
     namelist = map(lambda v: v.strip().lstrip('<').rstrip('>'), namelist)
 
     if verbose:
-	print(namelist, file=sys.stderr)
+        print(namelist, file=sys.stderr)
     # additional alternate names may also appear in INDEX commands
 
     # create the root element if needed
     if rootelement is None:
-	rootelement = lxml.etree.Element('refentrycontainer')
+        rootelement = lxml.etree.Element('refentrycontainer')
 
     # FUNCTION implies starting a new refentry
     if refentry is not None:
-	print("multiple FUNCTIONs without NEWPAGE", file=sys.stderr)
-	exit(1)
+        print("multiple FUNCTIONs without NEWPAGE", file=sys.stderr)
+        exit(1)
 
     # create the refentry
     refentry = lxml.etree.SubElement(rootelement, 'refentry')
@@ -232,8 +232,8 @@ def function(c, l):
     refdescriptor.text = namelist[0]
     # refname elements exist for all alternate names
     for n in namelist:
-	refname = lxml.etree.SubElement(refnamediv, 'refname')
-	refname.text = n
+        refname = lxml.etree.SubElement(refnamediv, 'refname')
+        refname.text = n
     refpurpose = lxml.etree.SubElement(refnamediv, 'refpurpose')
     refnamediv.replace(refpurpose, lxml.etree.fromstring('<refpurpose>' + descr + '</refpurpose>'))
 
@@ -249,7 +249,7 @@ def index(c, l):
     l = l.strip()
 
     if verbose:
-	print('INDEX %s' % l, file=sys.stderr)
+        print('INDEX %s' % l, file=sys.stderr)
 
     # discard anything after the first word
     l = l.split()[0]
@@ -269,13 +269,13 @@ def index(c, l):
 
     # as long as it doesn't already exist
     if not refnamediv.xpath(('refname[.="%s"]') % l):
-	refname = lxml.etree.SubElement(refnamediv, 'refname')
-	refname.text = l
-	if verbose > 1:
-	    print('added refname %s' % l, file=sys.stderr)
+        refname = lxml.etree.SubElement(refnamediv, 'refname')
+        refname.text = l
+        if verbose > 1:
+            print('added refname %s' % l, file=sys.stderr)
     else:
-	if verbose > 1:
-	    print('duplicate refname %s discarded' % l, file=sys.stderr)
+        if verbose > 1:
+            print('duplicate refname %s discarded' % l, file=sys.stderr)
 
     # to validate, it seems we need to maintain refnamediv elements in a certain order
     refnamediv[:] = sorted(refnamediv, key = lambda x: x.tag)
@@ -293,28 +293,28 @@ def synopsis(c, t):
 
     s = ''
     for l in t.splitlines():
-	if re.match('\s*(#|\[|struct)', l):
-	    # preprocessor # directives, structs, comments in square brackets
-	    funcsynopsisinfo = lxml.etree.SubElement(funcsynopsis, 'funcsynopsisinfo')
-	    funcsynopsisinfo.text = l.strip() + '\n'
-	elif re.match('[Ll]ink with', l):
-	    pass
-	else:
-	    s = s + l
-
-	    # a prototype without a terminating ';' is an error
-	    if s.endswith(')'):
-		print("'%s' missing terminating semicolon" % l, file=sys.stderr)
-		s = s + ';'
-		exit(1)
-
-	    if ';' in s:
-		synopsis_for_prototype(funcsynopsis, s)
-		s = ''
+        if re.match('\s*(#|\[|struct)', l):
+            # preprocessor # directives, structs, comments in square brackets
+            funcsynopsisinfo = lxml.etree.SubElement(funcsynopsis, 'funcsynopsisinfo')
+            funcsynopsisinfo.text = l.strip() + '\n'
+        elif re.match('[Ll]ink with', l):
+            pass
+        else:
+            s = s + l
+
+            # a prototype without a terminating ';' is an error
+            if s.endswith(')'):
+                print("'%s' missing terminating semicolon" % l, file=sys.stderr)
+                s = s + ';'
+                exit(1)
+
+            if ';' in s:
+                synopsis_for_prototype(funcsynopsis, s)
+                s = ''
 
     if s.strip():
-	print("surplus synopsis '%s'" % s, file=sys.stderr)
-	exit(1)
+        print("surplus synopsis '%s'" % s, file=sys.stderr)
+        exit(1)
 
 def synopsis_for_prototype(funcsynopsis, s):
     s = s.strip()
@@ -323,48 +323,48 @@ def synopsis_for_prototype(funcsynopsis, s):
     # bare prototype into it.  Fortunately, since the parameter names are marked
     # up, we have enough information to do this.
     for fp in s.split(';'):
-	fp = fp.strip()
-	if fp:
+        fp = fp.strip()
+        if fp:
 
-	    if verbose:
-		print("'%s'" % fp, file=sys.stderr)
+            if verbose:
+                print("'%s'" % fp, file=sys.stderr)
 
-	    match = re.match(r'(.*?)([\w\d]*) ?\((.*)\)', fp)
+            match = re.match(r'(.*?)([\w\d]*) ?\((.*)\)', fp)
 
-	    if verbose:
-		print(match.groups(), file=sys.stderr)
+            if verbose:
+                print(match.groups(), file=sys.stderr)
 
-	    funcprototype = lxml.etree.SubElement(funcsynopsis, 'funcprototype')
-	    funcdef = lxml.etree.SubElement(funcprototype, 'funcdef')
-	    funcdef.text = match.group(1)
-	    function = lxml.etree.SubElement(funcdef, 'function')
-	    function.text = match.group(2)
+            funcprototype = lxml.etree.SubElement(funcsynopsis, 'funcprototype')
+            funcdef = lxml.etree.SubElement(funcprototype, 'funcdef')
+            funcdef.text = match.group(1)
+            function = lxml.etree.SubElement(funcdef, 'function')
+            function.text = match.group(2)
 
-	    if match.group(3).strip() == 'void':
-		void = lxml.etree.SubElement(funcprototype, 'void')
-	    else:
-		# Split parameters on ',' except if it is inside ()
-		for p in re.split(',(?![^()]*\))', match.group(3)):
-		    p = p.strip()
+            if match.group(3).strip() == 'void':
+                void = lxml.etree.SubElement(funcprototype, 'void')
+            else:
+                # Split parameters on ',' except if it is inside ()
+                for p in re.split(',(?![^()]*\))', match.group(3)):
+                    p = p.strip()
 
-		    if verbose:
-			print(p, file=sys.stderr)
+                    if verbose:
+                        print(p, file=sys.stderr)
 
-		    if p == '...':
-			varargs = lxml.etree.SubElement(funcprototype, 'varargs')
-		    else:
-			paramdef = lxml.etree.SubElement(funcprototype, 'paramdef')
-			parameter = lxml.etree.SubElement(paramdef, 'parameter')
+                    if p == '...':
+                        varargs = lxml.etree.SubElement(funcprototype, 'varargs')
+                    else:
+                        paramdef = lxml.etree.SubElement(funcprototype, 'paramdef')
+                        parameter = lxml.etree.SubElement(paramdef, 'parameter')
 
-			# <[ ]> enclose the parameter name
-			match2 = re.match('(.*)<\[(.*)\]>(.*)', p)
+                        # <[ ]> enclose the parameter name
+                        match2 = re.match('(.*)<\[(.*)\]>(.*)', p)
 
-			if verbose:
-			    print(match2.groups(), file=sys.stderr)
+                        if verbose:
+                            print(match2.groups(), file=sys.stderr)
 
-			paramdef.text = match2.group(1)
-			parameter.text = match2.group(2)
-			parameter.tail = match2.group(3)
+                        paramdef.text = match2.group(1)
+                        parameter.text = match2.group(2)
+                        parameter.tail = match2.group(3)
 
 
 # DESCRIPTION
@@ -384,15 +384,15 @@ def refsect(t, s):
     title.text = t.title()
 
     if verbose:
-	print('%s has %d paragraphs' % (t, len(s.split('\n\n'))) , file=sys.stderr)
+        print('%s has %d paragraphs' % (t, len(s.split('\n\n'))) , file=sys.stderr)
 
     if verbose > 1:
-	dump(s, 'before lexing')
+        dump(s, 'before lexing')
 
-	# dump out lexer token sequence
-	lex.input(s)
-	for tok in lexer:
-	    print(tok, file=sys.stderr)
+        # dump out lexer token sequence
+        lex.input(s)
+        for tok in lexer:
+            print(tok, file=sys.stderr)
 
     # parse the section text for makedoc markup and the few pieces of texinfo
     # markup we understand, and output an XML marked-up string
@@ -421,25 +421,25 @@ def discarded(c, t):
     return
 
 command_dispatch_dict = {
-    'FUNCTION'		: function,
-    'TYPEDEF'		: function,	# TYPEDEF is not currently used, but described in doc.str
-    'INDEX'		: index,
-    'TRAD_SYNOPSIS'	: discarded,	# K&R-style synopsis, obsolete and discarded
-    'ANSI_SYNOPSIS'	: synopsis,
-    'SYNOPSIS'		: synopsis,
-    'DESCRIPTION'	: refsect,
-    'RETURNS'		: refsect,
-    'ERRORS'		: refsect,
-    'PORTABILITY'	: refsect,
-    'BUGS'		: refsect,
-    'WARNINGS'		: refsect,
-    'SEEALSO'		: seealso,
-    'NOTES'		: refsect,	# NOTES is not described in doc.str, so is currently discarded by makedoc, but that doesn't seem right
-    'QUICKREF'		: discarded,	# The intent of QUICKREF and MATHREF is not obvious, but they don't generate any output currently
-    'MATHREF'		: discarded,
-    'START'		: discarded,	# a START command is inserted to contain the text before the first command
-    'END'		: discarded,	# an END command is inserted merely to terminate the text for the last command in a comment block
-    'NEWPAGE'		: newpage,
+    'FUNCTION'          : function,
+    'TYPEDEF'           : function,     # TYPEDEF is not currently used, but described in doc.str
+    'INDEX'             : index,
+    'TRAD_SYNOPSIS'     : discarded,    # K&R-style synopsis, obsolete and discarded
+    'ANSI_SYNOPSIS'     : synopsis,
+    'SYNOPSIS'          : synopsis,
+    'DESCRIPTION'       : refsect,
+    'RETURNS'           : refsect,
+    'ERRORS'            : refsect,
+    'PORTABILITY'       : refsect,
+    'BUGS'              : refsect,
+    'WARNINGS'          : refsect,
+    'SEEALSO'           : seealso,
+    'NOTES'             : refsect,      # NOTES is not described in doc.str, so is currently discarded by makedoc, but that doesn't seem right
+    'QUICKREF'          : discarded,    # The intent of QUICKREF and MATHREF is not obvious, but they don't generate any output currently
+    'MATHREF'           : discarded,
+    'START'             : discarded,    # a START command is inserted to contain the text before the first command
+    'END'               : discarded,    # an END command is inserted merely to terminate the text for the last command in a comment block
+    'NEWPAGE'           : newpage,
 }
 
 #
@@ -483,7 +483,7 @@ def line_markup_convert(p):
     s = s.replace('@*', '</para><para>')
 
     if (verbose > 3) and (s != p):
-	print('%s-> line_markup_convert ->\n%s' % (p, s), file=sys.stderr)
+        print('%s-> line_markup_convert ->\n%s' % (p, s), file=sys.stderr)
 
     return s
 
@@ -529,9 +529,9 @@ def t_TEXINFO(t):
     # if the line starts with a known texinfo command, change t.type to the
     # token for that command
     for k in texinfo_commands.keys():
-	if t.value[1:].startswith(k):
-	    t.type = texinfo_commands[k]
-	    break
+        if t.value[1:].startswith(k):
+            t.type = texinfo_commands[k]
+            break
 
     return t
 
@@ -575,10 +575,10 @@ def t_BLANKLINE(t):
 
 def t_eof(t):
     if hasattr(t.lexer,'at_eof'):
-	# remove eof flag ready for lexing next input
-	delattr(t.lexer,'at_eof')
-	t.lexer.lineno = 0
-	return None
+        # remove eof flag ready for lexing next input
+        delattr(t.lexer,'at_eof')
+        t.lexer.lineno = 0
+        return None
 
     t.type = 'EOF'
     t.lexer.at_eof = True;
@@ -598,15 +598,15 @@ lexer = lex.lex()
 
 def parser_verbose(p):
     if verbose > 2:
-	print(p[0], file=sys.stderr)
+        print(p[0], file=sys.stderr)
 
 def p_input(p):
     '''input : paragraph
              | input paragraph'''
     if len(p) == 3:
-	p[0] = p[1] + '\n' + p[2]
+        p[0] = p[1] + '\n' + p[2]
     else:
-	p[0] = p[1]
+        p[0] = p[1]
     parser_verbose(p)
 
 # Strictly, text at top level should be paragraphs (i.e terminated by a
@@ -621,9 +621,9 @@ def p_paragraph_content(p):
     '''paragraph_content : paragraph_line
                          | paragraph_line paragraph_content'''
     if len(p) == 3:
-	p[0] = p[1] + p[2]
+        p[0] = p[1] + p[2]
     else:
-	p[0] = p[1]
+        p[0] = p[1]
     parser_verbose(p)
 
 def p_paragraph_line(p):
@@ -649,9 +649,9 @@ def p_maybe_lines(p):
     '''maybe_lines : empty
                    | paragraph maybe_lines'''
     if len(p) == 3:
-	p[0] = p[1] + p[2]
+        p[0] = p[1] + p[2]
     else:
-	p[0] = p[1]
+        p[0] = p[1]
     parser_verbose(p)
 
 def p_maybe_blankline(p):
@@ -668,32 +668,32 @@ def p_courier(p):
     '''courier : COURIER
                | COURIER courier'''
     if len(p) == 3:
-	p[0] = p[1] + p[2]
+        p[0] = p[1] + p[2]
     else:
-	p[0] = p[1]
+        p[0] = p[1]
     parser_verbose(p)
 
 def p_bullet(p):
     '''bullet : ITEM maybe_lines
               | ITEM BLANKLINE maybe_lines'''
     if len(p) == 3:
-	# Glue any text in ITEM into the first para of maybe_lines
-	# (This is an unfortunate consequence of the line-based tokenization we do)
-	if p[2].startswith('<para>'):
-	    p[0] = '<listitem><para>' + p[1] + p[2][len('<para>'):] + '</listitem>'
-	else:
-	    p[0] = '<listitem><para>' + p[1] + '</para>' + p[2] + '</listitem>'
+        # Glue any text in ITEM into the first para of maybe_lines
+        # (This is an unfortunate consequence of the line-based tokenization we do)
+        if p[2].startswith('<para>'):
+            p[0] = '<listitem><para>' + p[1] + p[2][len('<para>'):] + '</listitem>'
+        else:
+            p[0] = '<listitem><para>' + p[1] + '</para>' + p[2] + '</listitem>'
     else:
-	p[0] = '<listitem><para>' + p[1] + '</para>' + p[3] + '</listitem>'
+        p[0] = '<listitem><para>' + p[1] + '</para>' + p[3] + '</listitem>'
     parser_verbose(p)
 
 def p_bullets(p):
     '''bullets : bullet
                | bullet bullets'''
     if len(p) == 3:
-	p[0] = p[1] + '\n' + p[2]
+        p[0] = p[1] + '\n' + p[2]
     else:
-	p[0] = p[1]
+        p[0] = p[1]
     parser_verbose(p)
 
 def p_bulletlist(p):
@@ -705,18 +705,18 @@ def p_row(p):
     '''row : ITEM maybe_lines
            | ITEM BLANKLINE maybe_lines'''
     if len(p) == 3:
-	p[0] = '<row><entry><code>' + p[1] + '</code></entry><entry>' + p[2] + '</entry></row>'
+        p[0] = '<row><entry><code>' + p[1] + '</code></entry><entry>' + p[2] + '</entry></row>'
     else:
-	p[0] = '<row><entry><code>' + p[1] + '</code></entry><entry>' + p[3] + '</entry></row>'
+        p[0] = '<row><entry><code>' + p[1] + '</code></entry><entry>' + p[3] + '</entry></row>'
     parser_verbose(p)
 
 def p_rows(p):
     '''rows : row
             | row rows'''
     if len(p) == 3:
-	p[0] = p[1] + '\n' + p[2]
+        p[0] = p[1] + '\n' + p[2]
     else:
-	p[0] = p[1]
+        p[0] = p[1]
     parser_verbose(p)
 
 def p_table(p):
@@ -756,9 +756,9 @@ def p_mct_columns(p):
     '''mct_columns : maybe_lines
                    | maybe_lines MCT_COLUMN_SEPARATOR mct_columns'''
     if len(p) == 4:
-	p[0] = '<entry>' + p[1] + '</entry>' + p[3]
+        p[0] = '<entry>' + p[1] + '</entry>' + p[3]
     else:
-	p[0] = '<entry>' + p[1] + '</entry>'
+        p[0] = '<entry>' + p[1] + '</entry>'
     parser_verbose(p)
 
 def p_mct_row(p):
@@ -770,9 +770,9 @@ def p_mct_rows(p):
     '''mct_rows : mct_row
                 | mct_row mct_rows'''
     if len(p) == 3:
-	p[0] = p[1] + '\n' + p[2]
+        p[0] = p[1] + '\n' + p[2]
     else:
-	p[0] = p[1]
+        p[0] = p[1]
     parser_verbose(p)
 
 def p_mct_header(p):
@@ -810,15 +810,15 @@ def main(file):
     s = lxml.etree.tostring(rootelement, pretty_print=True)
 
     if not s:
-	print('No output produced (perhaps the input has no makedoc markup?)', file=sys.stderr)
-	exit(1)
+        print('No output produced (perhaps the input has no makedoc markup?)', file=sys.stderr)
+        exit(1)
 
     print(s)
 
     # warn about texinfo commands which didn't get processed
     match = re.search('@[a-z*]+', s)
     if match:
-	print('texinfo command %s remains in output' % match.group(), file=sys.stderr)
+        print('texinfo command %s remains in output' % match.group(), file=sys.stderr)
 
 #
 #
@@ -831,11 +831,11 @@ if __name__ == '__main__' :
     (opts, args) = options.parse_args()
 
     if opts.cache:
-	sys.exit()
+        sys.exit()
 
     verbose = opts.verbose
 
     if len(args) > 0:
-	main(open(args[0], 'rb'))
+        main(open(args[0], 'rb'))
     else:
-	main(sys.stdin)
+        main(sys.stdin)