[.github] Update shellcheck CI job for manifest/gencode-* directories

Author: sideeffect42

.github/workflows/shellcheck.yml

@@ -86,9 +86,20 @@ jobs:
               "${type}"/gencode-local \
               "${type}"/gencode-remote
             do
-              test -e "${c}" || continue
-
-              shellcheck ${SHELLCHECKOPTS-} "${c}" || rc=1
+              set --
+              if test -d "${c}"
+              then
+                if test -f "${c}/init"
+                then
+                  set -- "$@" "${c}/init"
+                else
+                  set -- "$@" "${c}"/*
+                fi
+              elif test -f "${c}"
+              then
+                set -- "$@" "${c}"
+              fi
+              shellcheck ${SHELLCHECKOPTS-} "$@" || rc=1
             done
 
             if test -d "${type}/explorer"
@@ -169,9 +180,20 @@ jobs:
               "${type}"/gencode-local \
               "${type}"/gencode-remote
             do
-              test -e "${c}" || continue
-
-              shellcheck -f gcc ${SHELLCHECKOPTS-} "${c}" \
+              set --
+              if test -d "${c}"
+              then
+                if test -f "${c}/init"
+                then
+                  set -- "$@" "${c}/init"
+                else
+                  set -- "$@" "${c}"/*
+                fi
+              elif test -f "${c}"
+              then
+                set -- "$@" "${c}"
+              fi
+              shellcheck -f gcc ${SHELLCHECKOPTS-} "$@" \
               | proc_shellcheck_output \
               || rc=1
             done