check-code.py: make help strings consistent

contrib/check-code.py

@@ -33,17 +33,17 b' def rephere(m):'
 
 
 testpats = [
-    (r'(pushd|popd)', "don't use pushd|popd, use cd"),
-    (r'\W\$?\(\([^\)]*\)\)', "don't use (()) or $(()), use expr"),
+    (r'(pushd|popd)', "don't use 'pushd' or 'popd', use 'cd'"),
+    (r'\W\$?\(\([^\)]*\)\)', "don't use (()) or $(()), use 'expr'"),
     (r'^function', "don't use 'function', use old style"),
-    (r'grep.*-q', "don't use grep -q, redirect to /dev/null"),
+    (r'grep.*-q', "don't use 'grep -q', redirect to /dev/null"),
     (r'echo.*\\n', "don't use 'echo \\n', use printf"),
-    (r'^diff.*-\w*N', "don't use diff -N"),
+    (r'^diff.*-\w*N', "don't use 'diff -N'"),
     (r'(^| )wc[^|]*$', "filter wc output"),
-    (r'head -c', "don't use head -c, use dd"),
-    (r'ls.*-\w*R', "don't use ls -R, use find"),
-    (r'printf.*\\\d\d\d', "don't use printf \NNN, use python"),
-    (r'printf.*\\x', "don't use printf \\x, use python"),
+    (r'head -c', "don't use 'head -c', use 'dd'"),
+    (r'ls.*-\w*R', "don't use 'ls -R', use 'find'"),
+    (r'printf.*\\\d\d\d', "don't use 'printf \NNN', use Python"),
+    (r'printf.*\\x', "don't use printf \\x, use Python"),
     (r'\$\(.*\)', "don't use $(expr), use `expr`"),
     (r'rm -rf \*', "don't use naked rm -rf, target a directory"),
     (r'(^|\|\s*)grep (-\w\s+)*[^|]*[(|]\w',