File 0648-ei-Document-allowed-arguments-to-erl_call-a.patch of Package erlang
From d7e9c0f38af73b465206682b4d26cb328aa484b3 Mon Sep 17 00:00:00 2001
From: Lukas Larsson <lukas@erlang.org>
Date: Fri, 13 Aug 2021 09:36:00 +0200
Subject: [PATCH 2/2] ei: Document allowed arguments to erl_call -a
---
lib/erl_interface/doc/src/erl_call_cmd.xml | 6 +++++-
lib/erl_interface/src/prog/erl_call.c | 4 +++-
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/lib/erl_interface/doc/src/erl_call_cmd.xml b/lib/erl_interface/doc/src/erl_call_cmd.xml
index 19b159d7a3..666cbb6dc4 100644
--- a/lib/erl_interface/doc/src/erl_call_cmd.xml
+++ b/lib/erl_interface/doc/src/erl_call_cmd.xml
@@ -72,7 +72,11 @@
<c>Fun</c> and <c>Args</c>, respectively.
<c>Args</c> is to be in the same format as for
<seemfa marker="erts:erlang#apply/3">
- <c>erlang:apply/3</c></seemfa> in <c>ERTS</c>.</p>
+ <c>erlang:apply/3</c></seemfa> in <c>ERTS</c> except only a
+ subset of all terms are allowed. The allowed term types are:
+ <c>list</c> (and <c>string</c> representation of list, that is "example"),
+ <c>tuple</c>, <c>atom</c> and <c>number</c>.
+ </p>
<p>Notice that this flag takes exactly one argument, so quoting
can be necessary to group <c>Mod</c>,
<c>Fun</c>, and <c>Args</c> in a manner
diff --git a/lib/erl_interface/src/prog/erl_call.c b/lib/erl_interface/src/prog/erl_call.c
index 8caf218e0e..b8e11c3f86 100644
--- a/lib/erl_interface/src/prog/erl_call.c
+++ b/lib/erl_interface/src/prog/erl_call.c
@@ -645,7 +645,9 @@ int main(int argc, char *argv[])
ei_x_new(&e); /* No version to ei_rpc() */
if (ei_x_format_wo_ver(&e, args) < 0) {
- /* FIXME no error message and why -1 ? */
+ fprintf(stderr, "erl_call: Failed to parse arguments,\n"
+ "see the documentation for allowed term types.\n"
+ "Arguments: %s\n", args);
exit(-1);
}
--
2.31.1
