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Besides allowing user-defined meta-commands, this change also refactors the meta-command machinery to split reading a command's arguments from the procedure actually implementing it, and hence allows nesting meta-commands. As an example of such a command, ",in" is added as a new meta-command. * module/system/repl/command.scm: Export `define-meta-command'. (*command-module*): Replaced by the hash table `*command-infos*'. (command-info, make-command-info, command-info-procedure) (command-info-arguments-reader): New procedures, encapsulating the information about a meta-command. (command-procedure): Adapted to use the `command-info' lookup procedure. (read-command-arguments): New auxiliary procedure invoking a command's argument reader procedure. (meta-command): Adapted to the split of reading arguments and executing a command. (add-meta-command!): New auxiliary procedure, registers a meta command's procedure and argument reader into `*command-infos* and `*command-table*. (define-meta-command): Extended to allow specification of the command's category; split the argument reader and actual command procedure. (guile:apropos, guile:load, guile:compile-file, guile:gc): Remove these aliases, they are unnecessary as we now use a hash table instead of the module to store the commands. (in): New meta-command, which evaluates an expression, or alternatively executes another meta-command, in the context of a specific module. * doc/ref/scheme-using.texi (Module Commands): Document the `in' meta-command. Signed-off-by: Ludovic Courtès <ludo@gnu.org> |
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This directory contains documentation on the Guile core. -*-text-*- The documentation consists of the following manuals. - The Guile Tutorial (guile-tut.texi) contains a tutorial introduction to using Guile. - The Guile Reference Manual (guile.texi) contains (or is intended to contain) reference documentation on all aspects of Guile. - The Revised^5 Report on the Algorithmic Language Scheme (r5rs.texi). Please be aware that this is all very much work in progress (apart from the Revised^5 Report). Bug reports and contributions are welcome! The file `oldfmt.c' contains a function which can be used by application writers to support both old-style and new-style error format strings. The `sources' directory includes some stuff relevant to the Guile reference manual, and which may eventually be folded in to it. It's not immediately relevant, however, which is why it's not in this directory. The Revised^4 Report (r4rs.texi) is no longer in this distribution, as it is completely superseded by the Revised^5 Report. If you need to consult R4RS, it is still widely available, for example at http://www-swiss.ai.mit.edu/projects/info/SchemeDocs/r4rs/.