more clean-ups and addition of a latexinden.pl configuration file

doc/.latexindent.yaml

@@ -1 +1,35 @@
-defaultIndent: "   "
+# 2 spaces
+defaultIndent: "  "
+# verbatim environments- environments specified 
+# in this hash table will not be changed at all!
+verbatimEnvironments:
+    verbatim: 1
+    alltt: 1
+# verbatim commands such as \verb! body !, \lstinline$something else$
+verbatimCommands:
+    verb: 1
+
+#  no indent blocks (not necessarily verbatim 
+#  environments) which are marked as %\begin{noindent}
+#  or anything else that the user puts in this hash
+#  table
+noIndentBlock:
+    noindent: 1
+
+# remove trailing whitespace from all lines 
+removeTrailingWhitespace:
+    beforeProcessing: 0
+    afterProcessing: 1
+
+indentAfterItems:
+    itemize: 1
+    enumerate: 1
+    description: 1
+    list: 1
+
+onlyOneBackUp: 1
+
+modifyLineBreaks:
+    textWrapOptions:
+        columns: 100
+

doc/makefile

@@ -38,5 +38,12 @@ manual:	mandvi
 	mv bn.bak bn.tex
 	rm -f bn.aux bn.dvi bn.log bn.idx bn.lof bn.out bn.toc
 
+# The file latexindent.pl is in several LaTeX distributions, if not:
+# https://ctan.org/pkg/latexindent
+# Its configuraion is well documented
+# http://mirrors.ctan.org/support/latexindent/documentation/latexindent.pdf
+pretty:
+	latexindent -w -m -l=.latexindent.yaml bn.tex
+
 clean:
 	rm -f *.idx *.toc *.log *.aux *.dvi *.lof *.ind *.ilg *.ps *.log tommath.tex