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* Revive -b option for binding Lisp variables.Kaz Kylheku2016-11-201-6/+24
| | | | | | | | * txr.c (txr_main): Implement -b option that takes an argument. Ensure that -b produces an error if clumped with other options. * txr.1: Documented -b var=val.
* Diagnose undefined functions in trace.Kaz Kylheku2016-11-191-1/+23
| | | | | | | | | * share/txr/stdlib/trace.tl (sys:trace): If symbol-function returns nil, throw exception. * txr.1: Document the behavior, along with return values of trace and untrace, and the tolerance of untrace to bad arguments.
* Allow global macros to be denoted by (macro sym).Kaz Kylheku2016-11-191-12/+74
| | | | | | | | | | | | | | | | | In this patch we allow (symbol-function '(macro sym)), (defun (macro sym) (form env) ...), and (trace (macro sym)). * eval.c (macro_s): New symbol variable. (lookup_fun, func_get_name, op_defun): Support (macro sym) syntax. (builtin_reject_test): Pass through (macro sym) syntax. (eval_init); Initialize macro_s. * share/txr/stdlib/place.tl (sys:get-fun-getter-setter): Support macro place. * txr.1: Documented verything.
* Handle interpreted macros through function.Kaz Kylheku2016-11-191-9/+21
| | | | | | | | | | | | | | | | All macros are function bindings now. * eval.c (me_interp_macro): New function. Body is a copy of block from expand_macro. (op_defmacro): Hoist the me_interp_macro function into the object domain, installing the macro material as the environment. This function is the expander. (expand_macro): Assume that the binding is a function and call it. The cons case is gone. (expand_macrolet): Similar change to the one in op_defmacro: a macrolet is also a function. * txr.1: Documentation under symbol-macro updated.
* Adding a tagbody macro to the language.Kaz Kylheku2016-11-181-0/+166
| | | | | | | | | | | | | | | | | | | | | | | This is a "disciplined goto" feature of Common Lisp. This uses a new sys:switch operator, which could also be used for optimizing case and cond forms. * eval.c (switch_s): New symbol variable. (op_switch, expand_list_of_form_lists, expand_switch): New static functions. (do_expand): Hook in the expansion of the sys:switch operator. (eval_init): Initialize switch_s special variable to sys:switch symbol. Register sys:switch special op. * lisplib.c (tagbody_set_entries, tagbody_instantiate): New static functions. (lisplib_init): Register autoloading of tagbody module via new functions. * share/txr/stdlib/tagbody.tl: New file. * txr.1: Documented.
* Completion of fallback list implementation.Kaz Kylheku2016-11-161-19/+211
| | | | | | | | | | | | | | | | | | | | | | | | * lib.c (find_symbol): New function. (symbol_present): Search the fallback list also to determine whether the symbol is visible. * lib.h (find_symbol): Declared. * parser.y (sym_helper): Implement a new behavior for qualified symbols. Interning new symbols is only allowed for packages that have an empty fallback list. * parser.c (get_visible_syms): New static function. (find_matching_syms): Use get_visible_syms to get the list of eligible symbols. This way the fallback list of the package is included if it is the current package. * share/txr/stdlib/package.tl (defpackage): Do not insert a default (:use usr) if there is no :usr clause. Since defpackage is very new, no need for backward compatibility; the amount of code depending on this is likely zero. * txr.1: Documented fallback list feature.
* Version 158.txr-158Kaz Kylheku2016-11-151-2/+2
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* doc: fixes under equal method.Kaz Kylheku2016-11-151-2/+4
| | | | * txr.1: clarification; article-noun plurality agreement.
* Introducing struct instance dirty flags.Kaz Kylheku2016-11-141-0/+78
| | | | | | | | | | | | | | | | * struct.c (struct struct_inst): New bitfield member, dirty. (struct_init): Register test-dirty, test-clear-dirty and clear-dirty intrinsics. (make_struct): Initialize dirty flag to 1. (slotset): If the object is clean, then determine whether the slot being set is an instance slot. If so, then set the dirty flag. (test_dirty, test_clear_dirty, clear_dirty): New functions. * struct.h (test_dirty, test_clear_dirty, clear_dirty): Declared. * txr.1: Documented dirty flags concept and new functions.
* New in-package macro.Kaz Kylheku2016-11-141-0/+25
| | | | | | | | | * lisplib.c (package_set_entries): Add in-package symbol name to autload list. * share/txr/stdlib/package.tl (in-package): New macro. * txr.1: Documented.
* Version 157.txr-157Kaz Kylheku2016-11-141-2/+2
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* New functions for command or file I/O in one call.Kaz Kylheku2016-11-131-0/+196
| | | | | | | | | | | | | | | | * lisplib.c (getput_set_entries, getput_instantiate): New static functions. (dlt_register): Register auto-loading for getput module via new functions. * share/txr/stdlib/getput.tl: New file. * txr.1: Documented new functions file-get, file-put, file-append, file-get-string, file-put-string, file-append-string, file-get-lines, file-put-lines, file-append-lines, command-get, command-put, command-get-string, command-put-string, command-get-lines, and command-put-lines.
* Introduce case{q,ql,qual}* macros which eval keys.Kaz Kylheku2016-11-121-0/+75
| | | | | | | | | | | | | | * eval.c (caseq_star_s, caseql_star_s, casequal_star_s): New symbol variables. (me_case): Implement new macro semantics. (eval_init): Initialize new symbol variables, and register the symbols to the me_case macro expander. * tests/sock-common.tl (local-addr): This function depends on the old broken caseql semantics which evaluate keys. Using caseql* makes it work again. * txr.1: Document case{q,ql,qual}* macros.
* New :use-from clause in defpackage.Kaz Kylheku2016-11-111-3/+25
| | | | | | | | * share/txr/stdlib/package.tl (defpackage): Implemented new :use-from clause. * txr.1: Documented :use-from and made some improvements to the defpackage documentation.
* Clause in case{q,ql,qual} with no forms yields nil.Kaz Kylheku2016-11-111-4/+18
| | | | | | | | * eval.c (me_case): If forms is nil, substitute the object (nil) for forms, to ensure a nil result through the expansion to a cond. * txr.1: Documented and added compat notes.
* Bugfix in case{q,ql,qual} macro expansion.Kaz Kylheku2016-11-111-0/+18
| | | | | | | | | * eval.c (me_case): The key must be quoted unconditionally whether it's an atom or list. Let's make this subject to the compatibility flag in case someone's code depends on it. * txr.1: Compat notes added.
* Add defpackage macro.Kaz Kylheku2016-11-111-0/+72
| | | | | | | | | | | * lisplib.c (package_set_entries, package_instantiate): New static functions. (lisplib_init): Register auto-loading for new package.tl file using new functions. * share/txr/stdlib/package.tl: New file. * txr.1: Documented.
* Implementing package foreign symbol concept.Kaz Kylheku2016-11-101-19/+413
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (eval_init): Register new intrinsics: package-local-symbols, package-foreign-symbols, use-sym, unuse-sym, use-package, unuse-package, unintern. * gc.c (mark_obj): Mark new hidhash member of struct package. * lib.c (make_package): Initialize new hidhash member of struct package. (lookup_package): New static function. (find_package): Allow string or symbol argument. (get_package): New static function. (delete_package, package_symbols): Use get_package for flexible package argument; delete_package removes symbols from other packages via unuse_package. (package_local_symbols, package_foreign_symbols): New functions. (use_sym, unuse_sym): New functions. (resolve_package_designators): New static function. (use_package, unuse_package): New functions. (symbol_present): New static function. (intern): Revised with get_package for flexible package argument. (unintern): New function. (rehome_sym): Use get_package. Semantics revised. (obj_print_impl): Use symbol_present function to determine whether object is visible in *package* and can be printed without a prefix, rather than naive home package test. * lib.h (struct package): New member, hidhash. (package_local_symbols, package_foreign_symbols, use_sym, unuse_sym, use_package, unuse_package, unintern): Declared. * txr.1: Documentation updated. Extended section introducing the design of packages, and argument conventions. New functions described. Existing function descriptions revised, particularly rehome-sym. Missing description of delete-package added.
* Implement *package* special var; package overhaul.Kaz Kylheku2016-11-081-2/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (load): Rebind *package* in the local dynamic environment already established for the sake of *load-path*. By doing this we cause *package* to be restored to its prior value, which allows the loaded file to alter it. Common Lisp works this way. (eval_init): Register *package* variable, with the user package as its default value. * lib.c (package_s): New symbol variable. (intern, rehome_sym): Default the package argument to the current package, not to user_package. (get_user_package, get_system_package, get_keyword_package): Functions removed. (get_current_package): New function. (obj_print_impl): Revise symbol printing. Keyword and uninterned symbols are printed with : and #: prefixes. The remainder are printed with a package prefix if their home package isn't the current package. * lib.h (keyword_package, user_package, system_package): These macros are just straight aliases for the global variables, not going through the lookup mechanism, which was pointless. (cur_package): New macro. (package_s): Declared. (get_current_package): Declared. * lisplib.c (lisplib_try_load): Establish a local dynamic environment, and bind the *package* variable to the user package which the library modules expect. * parser.c (find_matching_syms, provide_completions): Treat unqualified symbols in the current package rather than user package. * parser.y (sym_helper): Intern unqualified symbols in the current package, not user package. * txr.1: Document that the variables user-package, system-package and keyword-package should not be modified. Document the *package* special variable, and that intern and rehome-sym default their package argument to its value. (Here we get rid of wrong references to the undocumented variable *user-package*).
* Support #: reading for uninterned symbols.Kaz Kylheku2016-11-071-0/+78
| | | | | | | | | | | | | | * parser.l (BTKEY, NTKEY): Renamed to BTKWUN and NTKWUN ("keyword and uninterned") respectively. Include an optional match for the # character. (BTOK, NTOK): Refer to BTKEY and NTKEY respectively * parser.y (sym_helper): Implement uninterned symbols by detecting when the package name string is "#" and handling specially. * txr.1: Documented package prefixes and uninterned symbols.
* New #; syntax for erasing following object.Kaz Kylheku2016-11-071-0/+82
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * parser.c (parser_circ_ref): Don't generate the circular reference if circular suppression is in effect. * parser.h (struct parser): New member, circ_suppress. We use this for suppressing the generation of circular #n# references in erased objects. * parser.l (grammar): Scan #; producing HASH_SEMI token. * parser.y (HASH_SEMI): New token. (hash_semis_n_expr, hash_semis_i_expr, ignored_i_exprs, ignored_n_exprs): New nonterminals, needed for supporting the use of #; in front of top-level forms. (spec): Use hash_semis_n_expr and hash_semis_i_expr instead of n_expr and i_expr. (r_expr): Support object erasure within nested syntax. (yybadtoken): Handle H_SEMI token. (parse): Initialize new circ_suppress member of parser struct to zero. * txr.1: Documented. * genvim.txr (txr_ign_par, txr_ign_bkt, txr_ign_par_interior, txr_ign_bkt_interior): New regions for colorizing erased objects (partial support). (txr_list, txr_bracket, txr_mlist, txr_mbrackets): Include erased objects by including regions txr_ign_par and txr_ign_bkt. * txr.vim, tl.vim: Regenerated.
* Version 156.txr-156Kaz Kylheku2016-11-051-2/+2
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Expose slots function.Kaz Kylheku2016-11-051-0/+14
| | | | | | | * struct.c (struct_init): Register slots intrinsic. (slots): Pass correct name string to stype_handle. * txr.1: Slots function documented.
* Support simple list arguments in getopts.Kaz Kylheku2016-11-031-1/+14
| | | | | | | | | | | | | | | | | * share/txr/stdlib/getopts.tl (defstruct sys:opt-parsed): New slot eff-type, appearing as an optional parameter in the boa constructor parameter list. (opt-desc check): Allow a type to be a cons with list in the car position. (sys:opt-parsed convert-type): Use the eff-type slot if it is set instead of the type from the descriptor. This lets us override the type for a slot, which is key to the recursive approach to how lists are handled in this same function. (opthelp): Show list type options in a visual way which suggests the use. No details are given. * txr.1: Documented list option type.
* Introducing command line option processing system.Kaz Kylheku2016-11-031-0/+386
| | | | | | | | | | | * lisplib.c (getopts_set_entries, getopts_instantiate): New functions. (lisplib_init): Register auto-loading for getopt.tl via new functions. * share/txr/stdlib/getopts.tl: New file. * txr.1: Documented new library area.
* New negated equality test functions.Kaz Kylheku2016-11-011-0/+48
| | | | | | | | | * eval.c (eval_init): Register neq, neql and nequal intrinsics. * lib.h (neq, neql, nequal): New inline functions. * txr.1: Documented neq, neql and nequal
* Relax restrictions on dwim places.Kaz Kylheku2016-10-311-11/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No longer require the leftmost expression in a dwim place to itself be a place, except when the expression evaluates to a list, and the list is subject to an element deletion or a range operation. * eval.c (eval_init): Register dwim-set and dwim-del with one additional argument that the C functions now take. * lib.c (dwim_set, dwim_del): Take a new place_p argument which informs these functions whether the object they are operating on came from a syntactic place. The forbidden situations are diagnosed based on this flag: modification of the subrange of a list, or deletion of a list ref. Some error messages reworded. * lib.h (dwim_set, dwim_del): Declarations updated. * share/txr/stdlib/place.tl (defplace dwim): Produce a different update, clobber and delete expansion when the obj-place form isn't a place. In the non-place case, do not assign the result of the sys:dwim-set or sys:dwim-del operation back obj-place. Furthermore, pass a Boolean flag to sys:dwim-set and sys:dwim-del indicating which situation is the case: did the object argument come from a place or non-place. * txr.1: Documentation updated.
* lambda-set method: treat [struct ...] as place.Kaz Kylheku2016-10-301-0/+127
| | | | | | | | | | | | | | | | | | | | | | | | * eval.c (eval_init): Change registration of dwim-set to only one required argument, with the rest variadic. * lib.c (lambda_set_s): New symbol variable. (dwim_set): Change to variadic function that takes all arguments other than the object/sequence being operated on as struct args *. Rewrite to do a test on the object type first, handling hashes and structs specially. (obj_init): Initialize lambda_set_s. * share/txr/stdlib/place.tl (defplace dwim): Rewritten for more generic syntax. The only argument required is obj-place; the other arguments are treated as a variable argument list, all treated uniformly. This eliminates the special handling of the default value for hash lookups. * args.h (args_count): New inline function. * txr.1: Updated documentation for dwim operator, which neglects to mention use over objects thanks to the lambda function. Documented lambda-set.
* Extend symbol-function accessor to methods.Kaz Kylheku2016-10-291-4/+31
| | | | | | | | | | | | | | | | | | * eval.c (looup_fun): Handle (meth ...) syntax. * share/txr/stdlib/place.tl (sys:get-fb): Function removed. (sys:get-fun-getter-setter): New function. (defplace symbol-function): Rework getter and setter using new function which works for method as well as regular function bindings. * txr.1: Documentation updated in several places. The mention of symbol-function in the list of place forms altered so it doesn't insinuate that the argument must be a symbol. Description of symbol-function updated. Also under the trace and untrace macros, a note added that tracing methods is possible.
* doc: erroneous claim about symbol-function.Kaz Kylheku2016-10-291-2/+2
| | | | | | | * txr.1: Fix description under fun operator which says that a macro expander is available via symbol-function. This is outdated; the symbol-macro function accesses macro bindings.
* doc: heading consistency in *load-path*Kaz Kylheku2016-10-291-1/+1
| | | | * txr.1: Only first word of heading is capitalized.
* doc: reference to nonexistent stream.Kaz Kylheku2016-10-291-1/+1
| | | | * txr.1: Under pprof, *std-output* corrected to *stdout*.
* Adding function tracing support.Kaz Kylheku2016-10-291-0/+62
| | | | | | | | | | | | | New variable *trace-output*, and macros trace and untrace. * lisplib.c (trace_set_entries, trace_instantiate): new static functions. (dlt_register): Register new functions to auto-load trace module. * share/txr/stdlib/trace.tl: New file. * txr.1: Documented.
* New awk capability: file/pipe I/O redirection.Kaz Kylheku2016-10-281-0/+154
| | | | | | | | | | | | | | * share/txr/stdlib/awk.tl (sys:awk-state): New slot, streams. Holds hash table of open streams. New :fini finalizer which closes all streams. (sys:awk-state ensure-stream, sys:awk-state close-or-flush): New methods. (sys:awk-redir): New macro. (sys:awk-let): Bind new local macros ->, ->>, <-, !> and !<. (awk): Call finalizers on awk state to get all streams to close. * txr.1: Document new awk macros.
* doc: update list of syntactic places.Kaz Kylheku2016-10-271-1/+11
| | | | | | * txr.1: Listing last, butlast, nthlast, butlastn, ref, sub, hash-userdata, slot, qref, slot access dot notation, and sock peer. Redundant listing of rest removed.
* doc: hyphenate "top-level" consistently.Kaz Kylheku2016-10-271-7/+7
| | | | * txr.1: Around half a dozen toplevel -> top-level edits.
* Improve alet macro.Kaz Kylheku2016-10-261-12/+13
| | | | | | | | | | | | | | | | | | | | | | | The alet macro should always convert bindings to constants into symbol macros; the all-or-nothing logic should be applied to any remaining bindings. * share/txr/stdlib/place.tl (sys:r-s-let-expander): Generalize this function somewhat more by passing in the fallback binding symbol to use for bindings that can't be turned into symbol macros, instead of hard-coding them to let. (rlset, slet): Specify 'let when calling sys:r-s-let-expander. (alet): If there are any bindings with constantp init expressions, then recurse: produce an expansion which separates constantp from non-constantp using sys:r-s-let-expander. Pass 'alet as fallback binding symbol; thus the expansion will recurse back to alet, but without all the constantp bindings, if there are any. We then deal with those using the existing all-or-nothing logic (which simplifies slightly since it doesn't have to check for constantp any more). * txr.1: Revised description of alet.
* Fix tok-str semantics once again.Kaz Kylheku2016-10-261-11/+58
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The problem is that when the regular expression is capable of matching empty strings, tok-str will extract an empty token immediately following a non-empty token. For instance (tok-str "a,b" /[^,]*/) extracts ("a" "" "b") instead of just ("a" "b"). This is a poor behavior and the way to fix it is to impose a rule that an empty token must not be extracted immediately at the ending position of a previous token. Only a non-empty token can be consecutive to a token. * lib.c (tok_str): Rewrite the logic of the loop, using the prev_empty flag to suppress empty tokens which immediately follow non-empty tokens. The addition of 1 to the position when the token is empty to skip a character is done at the bottom of the loop and a new last_end variable keeps track of the end position of the last extracted token for the purposes of extracting the keep-between area if keep_sep is true. The old loop is preserved intact and enabled by compatibility. * tests/015/split.tl: Multiple empty-regex test cases for tok-str updated. * txr.1: Updated tok-str documentation and also added a note between the conditions under which split-str and tok-str, invoked with keep-sep true, produce equivalent output. Added compatibility notes.
* last, butlast: become accessors, get optional arg.Kaz Kylheku2016-10-261-41/+110
| | | | | | | | | | | | | | | | | | | | * eval.c (optimize_qquote_form): Pass nil to default new argument of butlast. (me_whilet, me_iflet_whenlet): Likewise for last. (eval_init): Add optional argument to registration of last and butlast intrinsics. * lib.c (last, butlast): Support optional numeric argument, like in Common Lisp. * lib.h (last, butlast): Declarations updated. * share/txr/stdlib/place.tl (last, butlast): New place macros. * txr.1: Updated documentation. The description of last is now moved into the sequence functions section.
* sub function becomes accessor.Kaz Kylheku2016-10-261-3/+30
| | | | | | * share/txr/stdlib/place.tl (defplace sub): New place. * txr.1: Document sub as accessor.
* New accessors nthlast and butlastn.Kaz Kylheku2016-10-251-0/+165
| | | | | | | | | | | | | | * eval.c (eval_init): register nthlast and butlastn intrinsicis. * lib.c (nthlast, butlastn): New function. * lib.h (nthlast, butlastn): Declared. * share/txr/stdlib/place.tl (defplace nthlast, defplace butlastn): New places. * txr.1: Documented nthlast and butlastn.
* doc: bad formatting in PRNG warmup notes.Kaz Kylheku2016-10-241-1/+3
| | | | * txr.1: Fix .code element in the middle of text.
* doc: fix indentation under format.Kaz Kylheku2016-10-241-3/+1
| | | | | | * txr.1: Description of ! hanging indent directive, ironically, has wrong hanging indentation, due to stray misplaced .RE.
* doc: missing plurals in headings, missing .desc.Kaz Kylheku2016-10-231-2/+3
| | | | | | | | * checkman.txr (check-func): Check for excess elements in singular heading. Add exception for headings that have Operator and macro. * txr.1: Missing plural in chr-ixdigit and chr-xdigit heading. Same in hash-begin and hash-next, plus missing desc.
* Default to epoch time in time-parse.Kaz Kylheku2016-10-231-0/+10
| | | | | | | * lib.c (epoch_time): New static function. (time_parse): Default the struct tm to epoch. * txr.1: Documented.
* doc: spelling error new circle notation doc.Kaz Kylheku2016-10-231-1/+1
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* Version 155.txr-155Kaz Kylheku2016-10-211-2/+2
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Document circular printing.Kaz Kylheku2016-10-211-0/+144
| | | | | * txr.1: Documenting circular notation and the *print-circle* variable.
* Changes to the printing framework.Kaz Kylheku2016-10-201-19/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The print function now takes an optional boolean for pretty printing. The print method is also called with a third argument; hence structures can customize both standard printing and pretty printing. * lib.c (obj_print): Take pretty argument, and pass it down to obj_print_impl. This makes obj_pprint redundant. (obj_pprint): Function removed: it was identical to obj_print except for passing t down to obj_print_impl for the pretty argument. These two wrappers had started small and got bigger with identical changes done in parallel. (pprint): New function. (tostring, dump): Pass nil for pretty argument of obj_print. (tostringp): Use pprint instead of obj_pprint. * lib.h (obj_print): Declaration updated. (obj_pprint): Declaration removed. (print, pprint): Declared. * eval.c (prinl): Pass nil for pretty_p argument of obj_print. Do the stream defaulting here; obj_print doesn't do it. (pprinl): Pass t for pretty_p argument of obj_print, and do stream argument defaulting. (eval_init): Register print to new print function rather than directly to obj_print. Register pprint to new pprint function rather than obj_pprint. * hash.c (hash_print_op): Call obj_print_impl to print the :equal-based keyword, rather than obj_print. Pass down the pretty flag. All the other keywords are treated this way; this fixes an inconsistency. * match.c (dump_var): Call pprint instead of obj_pprint. * stream.c (formatv): Call obj_print, with a calculated pretty argument instead of switching between obj_pprint and obj_print. * struct.c (struct_inst_print): Except when in backward compatibility mode, call the object's print method in both pretty and regular printing mode, passing the mode as a third argument. * tests/012/oop.tl (defstruct animal): Support third argument in print method. Make it optional because there are some explicit calls which don't pass the argument. * txr.1: Documentation updated for print method and the print function. Revised text for some of the related functions. Added compat notes.
* doc: reduce-left fixes.Kaz Kylheku2016-10-201-2/+8
| | | | | * txr.1: Fixed grammar error and added clarification that the init-val isn't filtered through key-function.
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