Patch for GNU indent 2.2.11

gnu-indent.patch

diff --git c/Formula/gnu-indent.rb i/Formula/gnu-indent.rb
index b208611aeeeb..4a1e8ff93b5b 100644
--- c/Formula/gnu-indent.rb
+++ i/Formula/gnu-indent.rb
@@ -1,22 +1,17 @@
 class GnuIndent < Formula
   desc "C code prettifier"
   homepage "https://www.gnu.org/software/indent/"
-  url "https://ftp.gnu.org/gnu/indent/indent-2.2.12.tar.gz"
-  mirror "https://ftpmirror.gnu.org/indent/indent-2.2.12.tar.gz"
-  sha256 "e77d68c0211515459b8812118d606812e300097cfac0b4e9fb3472664263bb8b"
-
-  bottle do
-    rebuild 3
-    sha256 "424a7f469abb096382488440e00d55021d97405d8e72948cff93fb7826f71285" => :mojave
-    sha256 "ef3e9fa08a9cf100dcd9d5e85a17c88791b78fee201eba5ce8935da5072e4670" => :high_sierra
-    sha256 "73fb630f7391e4598bfeb823637f67ba8741926133813f00bde91dfd8a4f2972" => :sierra
-  end
+  url "https://ftp.gnu.org/gnu/indent/indent-2.2.11.tar.gz"
+  mirror "https://ftpmirror.gnu.org/indent/indent-2.2.11.tar.gz"
+  sha256 "aaff60ce4d255efb985f0eb78cca4d1ad766c6e051666073050656b6753a0893"

   depends_on "gettext"
+  depends_on "texi2html"
+
+  patch :p0, :DATA

   def install
     args = %W[
-      --disable-debug
       --disable-dependency-tracking
       --prefix=#{prefix}
       --mandir=#{man}
@@ -53,3 +48,25 @@ class GnuIndent < Formula
     EOS
   end
 end
+
+__END__
+--- doc/Makefile.in	2019-01-09 10:00:43.000000000 -0600
++++ doc/Makefile.in	2019-01-09 10:01:08.000000000 -0600
+@@ -663,14 +663,14 @@
+ html-split: @PACKAGE@_toc.html
+
+ @PACKAGE@.html: version.texi $(@PACKAGE@_TEXINFOS)
+-	$(TEXI2HTML) -expandinfo -number -monolithic `if test -f @PACKAGE@.texinfo; then echo @PACKAGE@.texinfo; else echo $(srcdir)/@PACKAGE@.texinfo; fi`
++	$(TEXI2HTML) -expandinfo -number-sections -monolithic `if test -f @PACKAGE@.texinfo; then echo @PACKAGE@.texinfo; else echo $(srcdir)/@PACKAGE@.texinfo; fi`
+
+ @PACKAGE@_toc.html: version.texi $(@PACKAGE@_TEXINFOS)
+ 	case "$(TEXI2HTML)" in \
+ 	  *"/missing texi2html") \
+-	     $(TEXI2HTML) -expand info -number -nomenu -split section `if test -f @PACKAGE@.texinfo; then echo @PACKAGE@.texinfo; else echo $(srcdir)/@PACKAGE@.texinfo; fi` || exit 0 ;; \
++	     $(TEXI2HTML) -expand info -number-sections -nomenu -split section `if test -f @PACKAGE@.texinfo; then echo @PACKAGE@.texinfo; else echo $(srcdir)/@PACKAGE@.texinfo; fi` || exit 0 ;; \
+ 	  *) $(RM) @PACKAGE@_*.html ; \
+-	     $(TEXI2HTML) -expand info -number -nomenu -split section `if test -f @PACKAGE@.texinfo; then echo @PACKAGE@.texinfo; else echo $(srcdir)/@PACKAGE@.texinfo; fi` ;; \
++	     $(TEXI2HTML) -expand info -number-sections -nomenu -split section `if test -f @PACKAGE@.texinfo; then echo @PACKAGE@.texinfo; else echo $(srcdir)/@PACKAGE@.texinfo; fi` ;; \
+ 	esac
+
+ install-html-monolithic: @PACKAGE@.html

You can apply this with the usual patch -p1 < gnu-indent.patch. This is not designed to be a git patch so you'll still be able to update your Homebrew directory correctly.

Once you apply this patch, you can run:

brew install gnu-indent

This will (depending on your current status) install GNU indent 2.2.11. To keep that version installed run:

brew pin gnu-indent

This will prevent Homebrew from updating gnu-indent until you unpin it later.