hygiene: shell escape $awk and $prepro.

Since $awk and $prepro are now controlled via command line
options, and are being fed to eval, we should shell escape
them.  Two of our test cases rely on the loose interpolation
behavior; we fix those using proper external mock programs
testawk and testcpp.

1 files changed, 3 insertions, 3 deletions

diff --git a/testcases b/testcases
index 8758398..31bf6af 100644
--- a/testcases
+++ b/testcases
@@ -180,14 +180,14 @@ foo_bar
 foo_bar
 --
 32:
-./cppawk --awk='printf "[%.2s]"' foo
+./cppawk --awk=./testawk foo
 :
 [-f][/t][--]
 --
 33:
-./cppawk --prepro-only --prepro='printf %.3s' abc
+./cppawk --prepro-only --prepro=./testcpp abc
 :
--iq-D_-I.-
+[-iq][-D_][-I.][-]
 --
 34:
 ./cppawk --prepro-only --awk=mawk mawk=__mawk__ | grep mawk