format shell scripts per style guide

src/script_opt/CPP/maint/README

@@ -3,6 +3,10 @@ This is a collection of scripts to support maintenance of -O gen-C++
 suite, and are currently tailored for the lead maintainer's own environment.
 The scripts all assume you're running them from build/ .
 
+If you make changes to the scripts, format them using
+
+	shfmt -w -i 4 -ci *.sh
+
 The maintenance workflow:
 
 1.  Update this timestamp, so this file will be changed and you'll remember

src/script_opt/CPP/maint/check-CPP-gen.sh

@@ -1,6 +1,8 @@
 #! /bin/sh
 
-out=out.`echo $1 | sed 's,\.\./,,;s,/,#,g'`
+out=out.$(echo $1 | sed 's,\.\./,,;s,/,#,g')
 
-(/bin/echo -n $1" "
-(src/zeek -O gen-C++ --optimize-files=testing/btest --optimize-func="<global-stmts>" $1 >& /dev/null && echo "success") || echo "fail") >CPP-test/$out 2>&1
+(
+    /bin/echo -n $1" "
+    (src/zeek -O gen-C++ --optimize-files=testing/btest --optimize-func="<global-stmts>" $1 >&/dev/null && echo "success") || echo "fail"
+) >CPP-test/$out 2>&1

src/script_opt/CPP/maint/check-zeek.sh

@@ -1,4 +1,4 @@
 #! /bin/sh
 
 /bin/echo -n $1" "
-(src/zeek --parse-only $1 >& /dev/null && echo "success") || echo "fail"
+(src/zeek --parse-only $1 >&/dev/null && echo "success") || echo "fail"

src/script_opt/CPP/maint/do-CPP-btest.sh

@@ -1,21 +1,30 @@
 #! /bin/sh
 
 rm -f CPP-gen.cc
-cp zeek.HOLD src/zeek || (echo Need to create clean zeek.HOLD; exit 1) || exit 1
+cp zeek.HOLD src/zeek || (
+    echo Need to create clean zeek.HOLD
+    exit 1
+) || exit 1
 
-base=`echo $1 | sed 's,\.\./,,;s,/,#,g'`
-rel_test=`echo $1 | sed 's,.*testing/btest/,,'`
+base=$(echo $1 | sed 's,\.\./,,;s,/,#,g')
+rel_test=$(echo $1 | sed 's,.*testing/btest/,,')
 
 export ZEEK_GEN_CPP=1
-export ZEEK_CPP_DIR=`pwd`
+export ZEEK_CPP_DIR=$(pwd)
 # export ZEEK_OPT_FUNCS="<global-stmts>"
 export ZEEK_OPT_FILES="testing/btest"
 
-(cd ../testing/btest; ../../auxil/btest/btest $rel_test)
+(
+    cd ../testing/btest
+    ../../auxil/btest/btest $rel_test
+)
 
 # export -n ZEEK_GEN_CPP ZEEK_CPP_DIR ZEEK_OPT_FUNCS ZEEK_OPT_FILES
 export -n ZEEK_GEN_CPP ZEEK_CPP_DIR ZEEK_OPT_FILES
 
 ninja
 
-(cd ../testing/btest; ../../auxil/btest/btest -a cpp -d -f ../../build/CPP-test/diag.$base $rel_test)
+(
+    cd ../testing/btest
+    ../../auxil/btest/btest -a cpp -d -f ../../build/CPP-test/diag.$base $rel_test
+)

src/script_opt/CPP/maint/find-test-files.sh

@@ -1,6 +1,6 @@
 #! /bin/sh
 
 find ../testing/btest -type f |
-egrep -v 'Baseline|\.tmp' |
-egrep '\.(zeek|test)$' |
-sort
+    egrep -v 'Baseline|\.tmp' |
+    egrep '\.(zeek|test)$' |
+    sort