\ nesting.fs displays nesting for primitive trace 12jun97jaw
\ Copyright (C) 1998 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth 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
\ of the License, 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
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\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
0 nestlevel !
key dup 9 u> WHILE
CASE ': OF cr nestlevel @ spaces 1 nestlevel +! emit ENDOF
'; OF cr -1 nestlevel +! nestlevel @ spaces emit
cr nestlevel @ spaces ENDOF
dup OF dup 31 u> IF emit THEN ENDOF
REPEAT drop bye ;