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.
---
 testcases | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

(limited to 'testcases')

diff --git a/testcases b/testcases
index d95e25f..1af3714 100644
--- a/testcases
+++ b/testcases
@@ -251,3 +251,36 @@ $cppawk --dump-macros '#define foo_bar 42' | grep foo_bar
 $cppawk --dump-macros x | (grep -q '#define [A-Za-z]' || echo "clean")
 :
 clean
+--
+44:
+$cppawk -f x -E x
+:
+ERR
+--
+45:
+$cppawk -E testdir/program.cwk
+:
+73
+--
+46:
+$cppawk -E testdir/program.cwk -f testdir/program.cwk
+:
+73
+--
+47:
+$cppawk -E testdir/arg.cwk a=3 b=4 testdir/data
+:
+ARGV[1]=a=3
+ARGV[2]=b=4
+ARGV[3]=testdir/data
+a=3
+b=4
+--
+48:
+echo | $cppawk -E testdir/safearg.cwk a=3 b=4 testdir/data
+:
+argv[1]=a=3
+argv[2]=b=4
+argv[3]=testdir/data
+a=
+b=
-- 
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