BashSupport Pro: Implement "info args_current" to show the current values of $1, $2, ... of the current frame

Author: jansorg

command/info_sub/args_current.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+# -*- shell-script -*-
+# gdb-like "info args" debugger command
+#
+#   Copyright (C) 2010-2011, 2016 Rocky Bernstein <rocky@gnu.org>
+#
+#   This program is free software; you can redistribute it and/or
+#   modify it under the terms of the GNU General Public License as
+#   published by the Free Software Foundation; either version 2, or
+#   (at your option) any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   General Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License
+#   along with this program; see the file COPYING.  If not, write to
+#   the Free Software Foundation, 59 Temple Place, Suite 330, Boston,
+#   MA 02111 USA.
+
+# Prints the current value of $@.
+
+_Dbg_help_add_sub info args_current \
+  "**info args_current**
+
+Show the current values of \$@, modifications by the script are accounted for.
+
+See also:
+---------
+
+**backtrace**." 1
+
+_Dbg_do_info_args_current() {
+  typeset -i n="${#_Dbg_arg[@]}"
+  typeset -i i
+  for ((i = 1; i <= n; i++)); do
+    _Dbg_printf "$%d = %s" "$i" "${_Dbg_arg[i]}"
+  done
+  return 0
+}

lib/info.sh

@@ -19,7 +19,7 @@
 #   the Free Software Foundation, 59 Temple Place, Suite 330, Boston,
 #   MA 02111 USA.
 
-typeset -r _Dbg_info_cmds='args breakpoints display files functions line program signals source stack variables warranty'
+typeset -r _Dbg_info_cmds='args args_current breakpoints display files functions line program signals source stack variables warranty'
 
 _Dbg_info_help() {
 
@@ -49,6 +49,11 @@ _Dbg_info_help() {
 
 
   case $subcmd in
+    args_current )
+      _Dbg_msg \
+"info args_current -- Current values of variables \$1, \$2, ... of the current stack frame."
+      return 0
+      ;;
     ar | arg | args )
       _Dbg_msg \
 "info args -- Argument variables (e.g. \$1, \$2, ...) of the current stack frame."

test/data/misc-output-41.right

@@ -149,6 +149,7 @@ output to go to STDOUT.
 List of info subcommands:
 -------------------------
 info args -- Argument variables (e.g. $1, $2, ...) of the current stack frame.
+info args_current -- Current values of variables $1, $2, ... of the current stack frame.
 info breakpoints -- Status of user-settable breakpoints
 info display -- Show all display expressions
 info files -- Source files in the program
@@ -162,9 +163,9 @@ info variables -- All global and static variable names
 info warranty -- Various kinds of warranty you do not have
 +info
 Info subcommands are:
-  args         files      line     source     warranty
+  args         display    handle   signals  variables
+  args_current     files      line     source   warranty
   breakpoints  functions  program  stack      watchpoints
-  display      handle     signals  variables
 +#### history...
 +H
 28: info
@@ -215,6 +216,7 @@ Info subcommands are:
 List of info subcommands:
 -------------------------
 info args -- Argument variables (e.g. $1, $2, ...) of the current stack frame.
+info args_current -- Current values of variables $1, $2, ... of the current stack frame.
 info breakpoints -- Status of user-settable breakpoints
 info display -- Show all display expressions
 info files -- Source files in the program
@@ -266,6 +268,7 @@ Invalid history number: foo
 List of info subcommands:
 -------------------------
 info args -- Argument variables (e.g. $1, $2, ...) of the current stack frame.
+info args_current -- Current values of variables $1, $2, ... of the current stack frame.
 info breakpoints -- Status of user-settable breakpoints
 info display -- Show all display expressions
 info files -- Source files in the program