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+#!/usr/bin/awk -f
+
+# SOLARIS USERS: Change "awk" to "nawk", above!!!
+
+# This is part of Phil's AWK tutorial at http://www.bolthole.com/AWK.html
+# This program adjusts the indentation level based on which keywords are
+# found in each line it encounters.
+#
+# THIS IS A (relatively) COMPLEX PROGRAM. If you're an AWK rookie,
+# go back and read the tutorial before trying to understand this program!
+# This program shows off awk functions, variables, and its ability to
+# perform multiple actions for the same line
+
+
+function doindent(){
+ tmpindent=indent;
+ if(indent<0){
+ print "ERROR; indent level == " indent
+ }
+ while(tmpindent >0){
+ printf(" ");
+ tmpindent-=1;
+ }
+}
+
+$1 == "done" { indent -=1; }
+$1 == "fi" { indent -=1; }
+$0 ~ /}/ { if(indent!=0) indent-=1; }
+
+# This is the 'default' action, that actually prints a line out.
+# This gets called AS WELL AS any other matching clause, in the
+# order they appear in this program.
+# An "if" match is run AFTER we run this clause.
+# A "done" match is run BEFORE we run this clause.
+ {
+ doindent();
+ print $0;
+ }
+
+$0 ~ /if.*;[ ]*then/ { indent+=1; }
+$0 ~ /for.*;[ ]*do/ { indent+=1; }
+$0 ~ /while.*;[ ]*do/ { indent+=1; }
+
+$1 == "then" { indent+=1; }
+$1 == "do" { indent+=1; }
+$0 ~ /{$/ { indent+=1; }