Currently we use "quotearg" to escape the strings output in Dot. As a
result, if the user's locale is C for instance, all the non-ASCII are
escaped. Unfortunately graphviz does not interpret this style of
escaping.
For instance:
5 -> 2 [style=solid label="\"\303\221\303\271\341\271\203\303\251\342\204\235\303\264\""]
was displayed as a sequence of numbers. We now output:
5 -> 2 [style=solid label="\"Ñùṃéℝô\""]
independently of the user's locale.
* src/system.h (obstack_backslash): New.
* src/graphviz.h, src/graphviz.c (escape): Remove, use
obstack_backslash instead.
* src/print-graph.c: Likewise.
* tests/report.at: Adjust.
* data/glr.c, src/graphviz.h, src/ielr.c, src/scan-gram.l,
* src/system.h, tests/actions.at, tests/glr-regression.at: Do not
use // comments.
Do not introduce variables after statements.
Provide "main" with a return value.
* src/graphviz.c (output_red): New, show reductions on the graph.
(no_reduce_bitset_init): New, initialize a bitset.
(print_token): New, print a lookahead token.
(escape): New, print "foo" as \"foo\" because Dot doesn't like quotes within
a label.
* src/graphviz.h : Adjust.
* src/print_graph.c (print_actions): Call output_red here.
Signed-off-by: Akim Demaille <akim@lrde.epita.fr>
The label text of nodes is centered "by default" (by the use of '\n' as
a line feed). This gives bad readability to the grammar rules shown in
state nodes, a left justification is much nicer. This is done by using '\l'
as the line feed.
In order to allow \l in the DOT file, changes to the quoting system seem
necessary.
* src/print_graph.c (print_core): Escape tokens here, instead of...
* src/graphviz.c (output_node): Here...
(escape): Using this, new.
Signed-off-by: Akim Demaille <akim@lrde.epita.fr>
