bin: add -d as a shorthand for --dot

* bin/common_aoutput.cc: Here.
* NEWS, doc/org/oaut.org: Mention it.
* tests/core/readsave.test: Use it once.

NEWS

@@ -2,8 +2,9 @@ New in spot 1.99.6a (not yet released)
 
   Command-line tools:
 
-  * randaut's short option for --density used to be -d.  It has been renamed
-    to -e so that -d means --dot in all tools.
+  * Tools that output automata now accept -d as a shorthand for --dot.
+    randaut's short option for specifying edge-density used to be -d:
+    it has been renamed to -e.
 
   * autfilt has a new option: --is-inherently-weak.
 

bin/common_aoutput.cc

 // -*- coding: utf-8 -*-
-// Copyright (C) 2012, 2013, 2014, 2015 Laboratoire de Recherche et
-// Développement de l'Epita (LRDE).
+// Copyright (C) 2012, 2013, 2014, 2015, 2016 Laboratoire de Recherche
+// et Développement de l'Epita (LRDE).
 //
 // This file is part of Spot, a model checking library.
 //
@@ -73,8 +73,7 @@ ARGMATCH_VERIFY(check_args, check_types);
 unsigned opt_check = 0U;
 
 enum {
-  OPT_DOT = 1,
-  OPT_LBTT,
+  OPT_LBTT = 1,
   OPT_NAME,
   OPT_STATS,
   OPT_CHECK,
@@ -84,7 +83,7 @@ static const argp_option options[] =
   {
     /**************************************************/
     { nullptr, 0, nullptr, 0, "Output format:", 3 },
-    { "dot", OPT_DOT, "1|a|b|B|c|e|f(FONT)|h|n|N|o|r|R|s|t|v|+INT",
+    { "dot", 'd', "1|a|b|B|c|e|f(FONT)|h|n|N|o|r|R|s|t|v|+INT",
       OPTION_ARG_OPTIONAL,
       "GraphViz's format (default).  Add letters for "
       "(1) force numbered states, "
@@ -229,10 +228,17 @@ int parse_opt_aoutput(int key, char* arg, struct argp_state*)
     case '8':
       spot::enable_utf8();
       break;
+    case 'd':
+      automaton_format = Dot;
+      opt_dot = arg;
+      break;
     case 'H':
       automaton_format = Hoa;
       hoa_opt = arg;
       break;
+    case 'o':
+      opt_output = arg;
+      break;
     case 'q':
       automaton_format = Quiet;
       break;
@@ -243,9 +249,6 @@ int parse_opt_aoutput(int key, char* arg, struct argp_state*)
       if (arg)
 	opt_never = arg;
       break;
-    case 'o':
-      opt_output = arg;
-      break;
     case OPT_CHECK:
       automaton_format = Hoa;
       if (arg)
@@ -253,10 +256,6 @@ int parse_opt_aoutput(int key, char* arg, struct argp_state*)
       else
 	opt_check |= check_all;
       break;
-    case OPT_DOT:
-      automaton_format = Dot;
-      opt_dot = arg;
-      break;
     case OPT_LBTT:
       automaton_format = Lbtt;
       opt_lbtt = arg;

doc/org/oaut.org

@@ -18,22 +18,31 @@ ltl2tgba --help | sed -n '/Output format:/,/^$/p' | sed '1d;$d'
 #+begin_example
   -8, --utf8                 enable UTF-8 characters in output (ignored with
                              --lbtt or --spin)
-      --dot[=a|b|c|f(FONT)|h|n|N|r|R|s|t|v]
-                             GraphViz's format (default).  Add letters for (a)
-                             acceptance display, (b) acceptance sets as
-                             bullets,(c) circular nodes, (f(FONT)) use FONT,
-                             (h) horizontal layout, (v) vertical layout, (n)
-                             with name, (N) without name, (r) rainbow colors
-                             for acceptance set, (R) color acceptance set by
-                             Inf/Fin, (s) with SCCs, (t) force transition-based
-                             acceptance.
-  -H, --hoaf[=i|s|t|m|l]     Output the automaton in HOA format.  Add letters
+      --check[=PROP]         test for the additional property PROP and output
+                             the result in the HOA format (implies -H).  PROP
+                             may be any prefix of 'all' (default),
+                             'unambiguous', 'stutter-invariant', or
+                             'strength'.
+  -d, --dot[=1|a|b|B|c|e|f(FONT)|h|n|N|o|r|R|s|t|v|+INT]
+                             GraphViz's format (default).  Add letters for (1)
+                             force numbered states, (a) acceptance display, (b)
+                             acceptance sets as bullets, (B) bullets except for
+                             Büchi/co-Büchi automata, (c) force circular
+                             nodes, (e) force elliptic nodes, (f(FONT)) use
+                             FONT, (h) horizontal layout, (v) vertical layout,
+                             (n) with name, (N) without name, (o) ordered
+                             transitions, (r) rainbow colors for acceptance
+                             sets, (R) color acceptance sets by Inf/Fin, (s)
+                             with SCCs, (t) force transition-based acceptance,
+                             (+INT) add INT to all set numbers
+  -H, --hoaf[=i|l|m|s|t|v]   Output the automaton in HOA format.  Add letters
                              to select (i) use implicit labels for complete
                              deterministic automata, (s) prefer state-based
                              acceptance when possible [default], (t) force
                              transition-based acceptance, (m) mix state and
-                             transition-based acceptance, (l) single-line
-                             output
+                             transition-based acceptance, (k) use state labels
+                             when possible, (l) single-line output, (v) verbose
+                             properties
       --lbtt[=t]             LBTT's format (add =t to force transition-based
                              acceptance even on Büchi automata)
       --name=FORMAT          set the name of the output automaton
@@ -55,11 +64,12 @@ can concatenate multiple automata (and even mix these three formats in
 the same stream), and the tools will be able to read and process them
 in sequence.
 
-The other possible outputs are [[http://www.graphviz.org/][GraphViz]] output (=--dot=), various
-statistics (=--stats=), or nothing at all (=--quiet=).  It may seem
-strange to ask a tool to not output anything, but it makes sense when
-only the exit status matters (for instance using [[file:autfilt.org][=autfilt=]] to check
-whether an input automaton has some property) or for timing purposes.
+The other possible outputs are [[http://www.graphviz.org/][GraphViz]] output (=-d= or =--dot=),
+various statistics (=--stats=), or nothing at all (=--quiet=).  It may
+seem strange to ask a tool to not output anything, but it makes sense
+when only the exit status matters (for instance using [[file:autfilt.org][=autfilt=]] to
+check whether an input automaton has some property) or for timing
+purposes.
 
 * HOA output
 
@@ -478,11 +488,11 @@ of Promela syntax.)
 
 * Dot output
 
-The =--dot= option (which usually is the default) causes automata to be
-output in GraphViz's format.
+The =-d= or =--dot= option causes automata to be output in GraphViz's
+format.
 
 #+BEGIN_SRC sh :results verbatim :exports code
-ltl2tgba '(Ga -> Gb) W c'
+ltl2tgba '(Ga -> Gb) W c' -d
 #+END_SRC
 
 #+BEGIN_SRC sh :results verbatim :exports results

tests/core/readsave.test

@@ -359,7 +359,7 @@ digraph G {
 EOF
 diff output expected
 
-ltl2tgba --dot=ban 'GFa & GFb' >output
+ltl2tgba -dban 'GFa & GFb' >output
 cat output
 cat >expected <<EOF
 digraph G {