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- uuuunnnnkkkknnnnoooowwwwnnnn((((nnnn)))) TTTTccccllll (((( )))) uuuunnnnkkkknnnnoooowwwwnnnn((((nnnn))))
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- NNNNAAAAMMMMEEEE
- unknown - Handle attempts to use non-existent commands
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- uuuunnnnkkkknnnnoooowwwwnnnn _c_m_d_N_a_m_e ?_a_r_g _a_r_g ...?
- _________________________________________________________________
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- This command doesn't actually exist as part of Tcl, but Tcl
- will invoke it if it does exist. If the Tcl interpreter
- encounters a command name for which there is not a defined
- command, then Tcl checks for the existence of a command
- named uuuunnnnkkkknnnnoooowwwwnnnn. If there is no such command, then the
- interpreter returns an error. If the uuuunnnnkkkknnnnoooowwwwnnnn command
- exists, then it is invoked with arguments consisting of the
- fully-substituted name and arguments for the original non-
- existent command. The uuuunnnnkkkknnnnoooowwwwnnnn command typically does things
- like searching through library directories for a command
- procedure with the name _c_m_d_N_a_m_e, or expanding abbreviated
- command names to full-length, or automatically executing
- unknown commands as sub-processes. In some cases (such as
- expanding abbreviations) uuuunnnnkkkknnnnoooowwwwnnnn will change the original
- command slightly and then (re-)execute it. The result of
- the uuuunnnnkkkknnnnoooowwwwnnnn command is used as the result for the original
- non-existent command.
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- KKKKEEEEYYYYWWWWOOOORRRRDDDDSSSS
- error, non-existent command
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- Page 1 (printed 7/17/95)
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