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Update tcl doc, yosys does not return data to tcl 

This pull request is to address YosysHQ/yosys#2980.

The documentation, as originally written, does not make it clear that yosys commands, when used within a tcl script, do not return any value to the tcl script.

This pull request notes this and offers a workaround via tee as noted in the issue.
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rockybulwinkle 2022-06-23 13:34:08 -05:00 committed by GitHub
parent b2408df313
commit ec2f8796bd
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6
kernel/yosys.cc
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@ -773,6 +773,12 @@ struct TclPass : public Pass {
log("\n");
log("If any arguments are specified, these arguments are provided to the script via\n");
log("the standard $argc and $argv variables.\n");
log("\n");
log("Note, tcl will not recieve the output of any yosys command. If the output\n");
log("of the tcl commands are needed, use the yosys command 'tee' to redirect yosys's\n");
log("output to a temporary file.\n");
log("\n");
}
void execute(std::vector<std::string> args, RTLIL::Design *) override {