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Diffstat (limited to 'doc')
| -rw-r--r-- | doc/sciteco.7.template | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/doc/sciteco.7.template b/doc/sciteco.7.template index f9cad80..6ca81ab 100644 --- a/doc/sciteco.7.template +++ b/doc/sciteco.7.template @@ -2078,7 +2078,7 @@ The most basic flow control command in \*(ST is the Go-to command. Since it is really an ordinary command, exceptional only in setting the program counter and influencing parsing, it is described in this document's command reference. -\*(ST may do simple unconditional and computed gotos. +\*(ST can perform simple unconditional and computed gotos. .LP .SCITECO_TOPIC label Labels are symbolic and are defined with the following syntax: @@ -2093,9 +2093,14 @@ When a label is encountered, it is cached in a macro-invocation level specific goto table if it is not in there already. Therefore every macro invocation has its own label namespace and gotos to a label have constant complexity once a label has been parsed. +\# The table lookup is not constant of course. Terminating a macro execution (or command line) fails if a label that is jumped to has not been defined. Labels are also historically used as comments in TECO code. +That's why \*(ST allows several identical labels in the same scope \(em +goto commands will always jump to the first occurrance of the label. +In case of label redefinition, a warning will be printed, so you are +encouraged to use \(lqtrue\(rq comments as described below. . .SS Comments .SCITECO_TOPIC comment |