dot: better support of state-based acceptance

* src/tgbaalgos/dotty.cc: Here.
* src/tgbaalgos/sbacc.cc: Make the produced automata as state-based.
* src/tgbatest/readsave.test: Add a test.

src/tgbatest/readsave.test

@@ -403,3 +403,109 @@ digraph G {
 }
 EOF
 diff output expected
+
+
+cat >in <<EOF
+HOA: v1
+States: 10
+Start: 0
+AP: 2 "a" "b"
+Acceptance: 4 Fin(0) | (Fin(1) & Inf(2)) | Fin(3)
+--BODY--
+State: 0
+[!0&!1] 1
+[0&!1] 2
+[!0&1] 3
+[0&1] 4
+State: 1 "test me" {0 3}
+[!0&!1] 1
+[0&!1] 2
+[!0&1] 6
+[0&1] 7
+State: 2 {0 2 3}
+[!0&!1] 1
+[0&!1] 2
+[!0&1] 6
+[0&1] 7
+State: 3 {3}
+[t] 5
+State: 4 "hihi" {2 3}
+[t] 5
+State: 5 {1 3}
+[t] 5
+State: 6 {0}
+[!0&!1] 8
+[!0&1] 6
+[0&!1] 9
+[0&1] 7
+State: 7 {0 2}
+[!0&!1] 8
+[!0&1] 6
+[0&!1] 9
+[0&1] 7
+State: 8 {0 3}
+[!0&!1] 8
+[!0&1] 6
+[0&!1] 9
+[0&1] 7
+State: 9 {0 2 3}
+[!0&!1] 8
+[!0&1] 6
+[0&!1] 9
+[0&1] 7
+--END--
+EOF
+
+cat >expected <<EOF
+digraph G {
+  rankdir=LR
+  label="Fin(⓿) | (Fin(❶) & Inf(❷)) | Fin(❸)"
+  labelloc="t"
+  I [label="", style=invis, width=0]
+  I -> 0
+  0 [label="0"]
+  0 -> 1 [label="!a & !b"]
+  0 -> 2 [label="a & !b"]
+  0 -> 3 [label="!a & b"]
+  0 -> 4 [label="a & b"]
+  1 [label="test me\n⓿❸"]
+  1 -> 1 [label="!a & !b"]
+  1 -> 2 [label="a & !b"]
+  1 -> 6 [label="!a & b"]
+  1 -> 7 [label="a & b"]
+  2 [label="2\n⓿❷❸"]
+  2 -> 1 [label="!a & !b"]
+  2 -> 2 [label="a & !b"]
+  2 -> 6 [label="!a & b"]
+  2 -> 7 [label="a & b"]
+  3 [label="3\n❸"]
+  3 -> 5 [label="1"]
+  4 [label="hihi\n❷❸"]
+  4 -> 5 [label="1"]
+  5 [label="5\n❶❸"]
+  5 -> 5 [label="1"]
+  6 [label="6\n⓿"]
+  6 -> 8 [label="!a & !b"]
+  6 -> 6 [label="!a & b"]
+  6 -> 9 [label="a & !b"]
+  6 -> 7 [label="a & b"]
+  7 [label="7\n⓿❷"]
+  7 -> 8 [label="!a & !b"]
+  7 -> 6 [label="!a & b"]
+  7 -> 9 [label="a & !b"]
+  7 -> 7 [label="a & b"]
+  8 [label="8\n⓿❸"]
+  8 -> 8 [label="!a & !b"]
+  8 -> 6 [label="!a & b"]
+  8 -> 9 [label="a & !b"]
+  8 -> 7 [label="a & b"]
+  9 [label="9\n⓿❷❸"]
+  9 -> 8 [label="!a & !b"]
+  9 -> 6 [label="!a & b"]
+  9 -> 9 [label="a & !b"]
+  9 -> 7 [label="a & b"]
+}
+EOF
+
+$autfilt --dot=ba in >out
+diff out expected