From 5293e86e5185b959a442633c93445ecfde107d1e Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Sun, 17 Jul 2022 18:55:55 -0700
Subject: Implement -E option and <safearg.h> header.

The -E option is not passed through to the Awk implementation
any more, which is not particularly useful, because the option
resembles -f, and its argument requires likewise handling.

We achieve the semantics that -E <name> is equivalent to
-f <name> --.

From the GNU Awk user's perspective, this is a regression
in the semantics of -E which also has the effect of suppressing
the processing of arguments which look like variable assignments.
To make up for that, we provide the <safearg.h> header which
suppresses all implicit treatment of the remaining arguments.
---
 testdir/arg.cwk     |  8 ++++++++
 testdir/safearg.cwk | 14 ++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 testdir/arg.cwk
 create mode 100644 testdir/safearg.cwk

(limited to 'testdir')

diff --git a/testdir/arg.cwk b/testdir/arg.cwk
new file mode 100644
index 0000000..a5c98a9
--- /dev/null
+++ b/testdir/arg.cwk
@@ -0,0 +1,8 @@
+END {
+  for (x in ARGV) {
+    if (x != 0)
+      printf("ARGV[%s]=%s\n", x, ARGV[x])
+  }
+  printf("a=%s\n", a)
+  printf("b=%s\n", b)
+}
diff --git a/testdir/safearg.cwk b/testdir/safearg.cwk
new file mode 100644
index 0000000..4f29b9f
--- /dev/null
+++ b/testdir/safearg.cwk
@@ -0,0 +1,14 @@
+#include <safearg.h>
+
+END {
+  for (x in ARGV) {
+    if (x != 0)
+      printf("ARGV[%s]=%s\n", x, ARGV[x])
+  }
+  for (x in argv) {
+    if (x != 0)
+      printf("argv[%s]=%s\n", x, argv[x])
+  }
+  printf("a=%s\n", a)
+  printf("b=%s\n", a)
+}
-- 
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