From ec347e5ed8daee2fe0c34a23fb13633918e99503 Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Wed, 3 Feb 2010 09:21:02 +0100
Subject: [PATCH] maint: teach "make syntax-check" the space-only indentation
 rule

* cfg.mk (sc_prohibit_tab_based_indentation): New rule, from coreutils.
(sc_prohibit_emacs__indent_tabs_mode__setting): Likewise.
* bootstrap: Remove "indent-tabs-mode: nil" directive.
* .x-sc_prohibit_tab_based_indentation: New file.
---
 .x-sc_prohibit_tab_based_indentation |  3 +++
 bootstrap                            |  4 ----
 cfg.mk                               | 12 ++++++++++++
 3 files changed, 15 insertions(+), 4 deletions(-)
 create mode 100644 .x-sc_prohibit_tab_based_indentation

diff --git a/.x-sc_prohibit_tab_based_indentation b/.x-sc_prohibit_tab_based_indentation
new file mode 100644
index 0000000..13276eb
--- /dev/null
+++ b/.x-sc_prohibit_tab_based_indentation
@@ -0,0 +1,3 @@
+(^|/)(GNU)?[Mm]akefile
+(^|/)ChangeLog
+\.(am|mk)$
diff --git a/bootstrap b/bootstrap
index 456b0b2..7136875 100755
--- a/bootstrap
+++ b/bootstrap
@@ -806,7 +806,3 @@ fi
 bootstrap_epilogue
 
 echo "$0: done.  Now you can run './configure'."
-
-# Local Variables:
-# indent-tabs-mode: nil
-# End:
diff --git a/cfg.mk b/cfg.mk
index b8d4644..136c96c 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -49,3 +49,15 @@ sc_prohibit_obsolete_HAVE_HEADER_H:
 update-copyright-env = \
   UPDATE_COPYRIGHT_USE_INTERVALS=1 \
   UPDATE_COPYRIGHT_MAX_LINE_LENGTH=79
+
+# Indent only with spaces.
+sc_prohibit_tab_based_indentation:
+	@re='^ *	'						\
+	msg='TAB in indentation; use only spaces'			\
+	  $(_prohibit_regexp)
+
+# Don't use "indent-tabs-mode: nil" anymore.  No longer needed.
+sc_prohibit_emacs__indent_tabs_mode__setting:
+	@re='^( *[*#] *)?indent-tabs-mode:'				\
+	msg='use of emacs indent-tabs-mode: setting'			\
+	  $(_prohibit_regexp)
-- 
2.47.2