protect builtin renames
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13
tcl/Util.tcl
13
tcl/Util.tcl
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@ -393,16 +393,11 @@ proc check_percent { cmd_arg arg } {
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# The builtin Tcl "source" and "unknown" commands are redefined by sta.
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# This rename provides a mechanism to refer to the original TCL
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# command.
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rename source builtin_source
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# This seems to be a common build problem.
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# It happens with incomplete installs of libtcl that can't find the
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# corresponding init.tcl file.
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if { [info procs unknown] == {} } {
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puts "TCL installation problem. proc unknown not defined. Check tcl_libraries $tcl_libraries for init.tcl"
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proc unknown { args } { return -code error "invalid command name" }
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} else {
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# Protected so this file can be reloaded without blowing up.
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if { ![info exists renamed_source] } {
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rename source builtin_source
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rename unknown builtin_unknown
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set renamed_source 1
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}
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# Numeric expressions eval to themselves so braces aren't required
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