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bin: add support for SPOT_DEFAULT_FORMAT

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* bin/common_aoutput.cc, bin/common_aoutput.hh, bin/common_setup.cc:
Implement it.
* NEWS, bin/man/spot-x.x: Document it.
* tests/core/readsave.test: Test it.
This commit is contained in:
Alexandre Duret-Lutz 2016-01-06 18:17:06 +01:00
parent cca2022e90
commit 9d6727da5c
6 changed files with 86 additions and 26 deletions
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39
bin/man/spot-x.x
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@ -1,5 +1,5 @@
[NAME]
spot-x \- Common fine-tuning options.
spot-x \- Common fine-tuning options and environment variables.
[SYNOPSIS]
.B \-\-extra-options STRING
@ -11,14 +11,41 @@ spot-x \- Common fine-tuning options.
[ENVIRONMENT VARIABLES]
.TP
\fBSPOT_DEFAULT_FORMAT\fR
Set to a value of \fBdot\fR or \fBhoa\fR to override the default
format used to output automata. Up to Spot 1.9.6 the default output
format for automata used to be \fBdot\fR. Starting with Spot 1.9.7,
the default output format switched to \fBhoa\fR as it is more
convenient when chaining tools in a pipe. Set this variable to
\fBdot\fR to get the old behavior. Additional options may be
passed to the printer by suffixing the output format with
\fB=\fR and the options. For instance running
.in +4n
.nf
.ft C
% SPOT_DEFAULT_OUTPUT=dot=bar autfilt ...
.fi
.in -4n
is the same as running
.in +4n
.nf
.ft C
% autfilt --dot=bar ...
.fi
.in -4n
but the use of the environment variable makes more sense if you set
it up once for many commands.
.TP
\fBSPOT_DOTDEFAULT\fR
Whenever the \f(CW--dot\fR option is used without argument (even
implicitely), the contents of this variable is used as default
argument. If you have some default setting in \fBSPOT_DOTDEFAULT\fR
but want to alter them temporarily for one call, use
\f(CW--dot=.yyy\fR: the dot character will be replaced by the contents
of the \f(CWSPOT_DOTDEFAULT\fR environment variable.
implicitely via \fBSPOT_DEFAULT_FORMAT\fR), the contents of this
variable is used as default argument. If you have some default
setting in \fBSPOT_DOTDEFAULT\fR but want to alter them temporarily
for one call, use \f(CW--dot=.yyy\fR: the dot character will be
replaced by the contents of the \f(CWSPOT_DOTDEFAULT\fR environment
variable.
.TP
\fBSPOT_DOTEXTRA\fR