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* linenoise: Ctrl-X/Ctrl-[AWR] relative to hist pos.Kaz Kylheku2015-10-021-2/+8
| | | | | | | | | | * linenoise/linenoise.c (edit): The recall previous word, atom and line features now offset relative to the current navigation position in the history. Previous line means the line before the currently showing history line, not the line most recently entered into the history. * txr.1: Documented.
* Struct methods and functions set up named block.Kaz Kylheku2015-10-021-1/+18
| | | | | | | | * share/txr/stdlib/struct.tl (defstruct): Generate a named block around the body forms of the :method and :function lambdas, whose name matches the slot name. * txr.1: Documented.
* linenoise: insert previous line command.Kaz Kylheku2015-10-021-0/+8
| | | | | | | * linenoise/linenoise.c (edit): Extended Ctrl-X Ctrl-R/r command added. * txr.1: Documented.
* Syntax formatting fixes in structs documentation.Kaz Kylheku2015-10-011-6/+6
| | | | | * txr.1: Formatting blunders in defstruct (description of :fini), new macro, make-struct-type.
* Version 118.txr-118Kaz Kylheku2015-10-011-2/+2
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* linenoise: Ctrl-A/E overloaded in multi-line mode.Kaz Kylheku2015-10-011-2/+9
| | | | | | | | | | | | | * linenoise/linenoise.c (edit_move_sol): If the cursor is already at the beginning of a line, then move it to the start of the buffer. (edit_move_eol): If the cursor is at the end of the line, then move it to the end of the buffer. This also fixes a bug: previously, if the cursor was at the end of the line already, it moved to the end of the following line. * txr.1: Documented.
* Allow super to take an instance as an argument.Kaz Kylheku2015-10-011-2/+3
| | | | | | | | * struct.c (super): Detect structure instance and resolve it to its type. Recursion eliminated in favor of imperative approach that eliminates redundant checks. * txr.1: Description of super updated.
* New super-method function.Kaz Kylheku2015-10-011-0/+31
| | | | | | | | | * struct.c (struct_init): Register super-method. (super_method): New function. * struct.h (super_method): Declared. * txr.1: Documented.
* Support for reverse order in finalization.Kaz Kylheku2015-10-011-18/+26
| | | | | | | | | | | | | | | | | | | | | | A new optional argument on finalize allows it to be expressed that multiple finalizers on the same object are to be called in reverse order, which is potentially for objects with inheritance. * gc.c (gc_finalize): New optional argument, rev_order_p. Insert at the head of the list if this argument is specified and true. (gc_late_init): Register finalize as three-argument function with optional argument. * gc.h (gc_finalize): Declaration updated. * share/txr/stdlib/struct.tl (defstruct): Register :fini functions in reverse, so that derived finalizers are called before supertype finalizers. * txr.1: Documented new finalize argument, and behavior of :fini.
* Bad formatting in version 113 compat notes.Kaz Kylheku2015-09-301-1/+2
| | | | * txr.1: Run-on .code macro fixed.
* Formatting fix in struct passwd and group headings.Kaz Kylheku2015-09-301-2/+2
| | | | * txr.1: * used instead of @.
* struct :init :fini specifiers.Kaz Kylheku2015-09-291-0/+58
| | | | | | | | * share/txr/stdlib/struct.tl (defstruct): New (:init ...) and (:fini ...) syntax can be used in the slot list to specify an initialization function and a gc-finalization function. * txr.1: Documented.
* Implementation of static slots for structures.Kaz Kylheku2015-09-291-50/+349
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * share/txr/stdlib/struct.tl (sys:bad-slot-syntax): New helper function. (defstruct): Macro revamped with new slot specifier syntax for writing static slots as well as methods. * struct.c (STATIC_SLOT_BASE): New preprocessor symbol. (struct struct_type): New members, nstslots, stinitfun, stslot. (make_struct_type_compat): New static function. (struct_init): Register make-struct-type to make_struct_type_compat if compatibility is 117 or lower. Register new intrinsics static-slot, static-slot-set, call-super-method, call-super-fun, slot-p and static-slot-p. (call_stinitfun_chain): New static function. (make_struct_type): Two new arguments for specifying static slots and an initialization function for them. Logic added for setting up static slots and handling inheritance. (struct_type_destroy): New static function. (struct_type_mark): Mark the new stinitfun member of struct type. Also iterate over the static slots in the new stslot array and mark them. (lookup_slot): Altered to return a loc instead of a raw pointer, and also to accept the instance object as a member. Now resolves static slots: it can return a loc which references a static slot in the structure type, or an instance slot in the structure. (lookup_static_slot): New static function. (slot, slotset): Implementation adjusted due to new lookup_slot interface. (static_slot, static_slot_set, slot_p, static_slot_p): New functions. (call_super_method, call_super_fun): New static functions. (struct_inst_print): This function can no longer assume that the slots list lines up with the array of slots, since it contains a mixture of static and instance slots. Earnest slot lookup has to be performed. (struct_type_ops): Point the destroy function to struct_type_destroy instead of cobj_destroy_free_op. A structure type now has an array of static slots to free. * struct.h (make_struct_type): Declaration updated. (static_slot, static_slot_set, slot_p, static_slot_p): Declared. * lib.c (time_init): Update call to make_struct_type with new arguments. * sysif.c (sysif_init): Likewise. * tests/012/struct.tl: Update defstruct macro expansion test. * txr.1: Documented static slots and new functions.
* linenoise: backspace also causes parenthesis jump.Kaz Kylheku2015-09-271-0/+4
| | | | | | | * linenoise/linenoise.c (edit): Do paren_jump after backspace * txr.1: Documented.
* linenoise: paren matching jump finds closes paren.Kaz Kylheku2015-09-271-2/+15
| | | | | | | | | | * linenoise/linenoise.c (find_nearest_paren): New static function. (edit_move_matching_paren): Use find_matching_paren to usefully handle situations when the cursor is not on a parenthesis, bracket or brace. * txr.1: Documented.
* linemode: multi-line behavior for Ctrl-A/Ctrl-E.Kaz Kylheku2015-09-251-0/+4
| | | | | | | | * linemode/linemode.c (edit_move_home, edit_move_end): Check for multi-line mode and implement movement within the physical line. * txr.1: Documented.
* Version 117.txr-117Kaz Kylheku2015-09-231-2/+2
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* doc: note another race in path-private-to-me-pKaz Kylheku2015-09-231-1/+13
| | | | | | * txr.1: document a TOCTTOU race condition in uses of path-private-to-me-p and how to get around it.
* doc: stat functions return structure.Kaz Kylheku2015-09-231-1/+1
| | | | | | * txr.1: Under Unix Filesystem Object Existence, Type and Access Tests, fix text which implies that the stat functions return a list.
* linenoise: forward paren jump too.Kaz Kylheku2015-09-221-2/+10
| | | | | | | | * linenoise/linenoise.c (paren_jump): Scan forward also, if reverse scan turns up nothing, thereby jumping to a closing parenthesis in the forward direction. * txr.1: Documentation updated.
* linenoise: selection endpoint toggle with Ctrl-^.Kaz Kylheku2015-09-221-0/+8
| | | | | | * linenoise/linenoise.c (edit): Implemented. * txr.1: Documented.
* linenoise: jump to matching parenthesisKaz Kylheku2015-09-221-0/+12
| | | | | | | | | * linenoise/linenoise.c (scan_match_fwd, scan_fwd, edit_move_matching_paren): New functions. (edit): New Ctrl-] command implemented using edit_move_matching_paren. * txr.1: Documented.
* linenoise: new Ctrl-X Ctrl-K command to delete line.Kaz Kylheku2015-09-211-0/+7
| | | | | | | | | * linenoise/linenoise.c (edit_delete_line): New static function. (edit): New Ctrl-K extended command case implemented using edit_delete_line. * txr.1: Documented.
* linenoise: multi-line behavior for del to bol/eol.Kaz Kylheku2015-09-211-3/+6
| | | | | | | | | | | | | * linenoise/linenoise.c (edit_delete_prev_all): In multi-line mode, delete only to beginning of physical line, not the entire logical line. Also, detect noop cases and don't do record undo or produce any effect. (edit_delete_to_eol): New function. (edit): Use edit_delete_to_eol function for Ctrl-K instead of inline code. * txr.1: Documented.
* linenoise: much more sane, per-history-item undo.Kaz Kylheku2015-09-211-19/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Undo now works intuitively. It does not perform invisible jumps among history items, restoring instead just the history for the given line being edited. * linenoise/linenoise.c (LINENOISE_MAX_UNDO): Raised from 32 to a more generous 200. Since edits are per-history line, it makes sense to allow a lot more. (delete_undo): New static function. (free_undo): Static function removed to free_undo_stack. Trivial loop around delete_undo. (record_undo): Do not record the current history index; all edits are assigned the index INT_MAX. INT_MAX is an indicator that the edits do not have an assigned history line. The decision of where to assign them depends on whether history navigation is used to move to another history line or Enter is used to submit an edited line. A stinky part of the history trimming code is rewritten simply in terms of delete_undo. (record_triv_undo): Suppress a trivial item only if the top item belongs to the same history line, or is nonspecific (INT_MAX). (undo_pop): Static function removed. (restore_undo): Rewritten to look for the topmost item specific to the current history line or an INT_MAX nonspecific item. Removes undo items for expired lines as it goes. (undo_subst_hist_idx): New static function. (renumber_undo_hist): Renamed to undo_renumber_hist_idx. (edit_history_next): Do not record an undo; history navigation is no longer considered an edit. Rewrite all the INT_MAX entries in the undo stack with the current history index, permanently associating the undo items with the history line away from which we are navigating. (edit): Do not record an undo for a line terminating with Enter. It is not an edit action. When leaving the funtion, renumber any INT_MAX entries in the undo history to history index zero. Thus edits to any line which is submitted via Enter will (correctly) not be associated with that line, which was not in fact edited, but with the new line that was submitted. (lino_cleanup): Follow rename of free_undo. (lino_hist_add): Follow rename of undo_renumber_hist_idx. * txr.1: Documented.
* linenoise: undo feature.Kaz Kylheku2015-09-201-0/+26
| | | | | | | | | | | | | | | | | | | | | * linenoise/linenoise.c (LINENOISE_MAX_UNDO): New preprocessor symbol. (struct lino_state): New member, undo_stack. (struct lino_undo): New struct type. (free_undo, record_undo, record_triv_undo, restore_undo): New static functions. (edit_insert): Record trivial undo item with record_triv_undo. (edit_insert_str, edit_history_next, edit_delete, edit_backspace, edit_delete_prev_all, edit_delete_prev_word, edit_in_editor): Record undo item. (edit): Record undo item before Ctrl-R history recall and Ctrl-T twiddle. Also record one final undo item upon Enter, as well as Ctrl-C. New Ctrl-O command to undo. (lino_copy): Do not copy undo_stack, to prevent double freeing. (lino_free): Free the undo history. * txr.1: Documented.
* linenoise: visual select and clipboard copy/paste.Kaz Kylheku2015-09-201-0/+101
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * linenoise/linenoise.c (struc lino_state): New member, clip, sel, end, dsel, dend, need_refresh, selmode. (sync_data_to_buf): Update the sel and end members of the structure based on dsel and dend, the way pos is being updated from dpos. (refresh_singleline, refresh_multiline): If visual selection mode is in effect, show the selected region in inverse video. (update_sel, clear_sel, yank_sel, delete_sel): New static function. (edit_insert): Delete the selection before inserting, so that the character appears to replace the selection. Set need_refresh flag instead of calling refresh_line. (edit_insert_str): New static function. Inserts string, replacing existing selection, if any. (paren_jump, edit_move_left, edit_move_right, edit_move_home, edit_move_end, edit_history_next): Set new need_refresh flag instead of calling refresh_line directly. (edit_delete): If selection is in effect, just delete the selection and return. Set need_refresh flag instead of calling refresh_line. (edit_backspace): If selection is in effect, and selection is not inverted (cursor is to the right of selection) then just delete the selection. Otherwise delete the selection, and perform the backspace. Set need_refresh flag instead of calling refresh_line. (edit_delete_prev_word): Delete the selection and the word before the selection. Set need_refresh flag instead of calling refresh_line. (edit_in_editor): Set need_refresh_flag instead of calling refresh_line, and cancel visual selection mode. (edit): Clear selection mode on entry. Update the selection variables on each loop iteration. Honor the need_refresh flag. New commands implemented: Ctrl-S, Ctrl-Q, Ctrl-X Ctrl-Q. Some commands need to set need_refresh flag. Some need to cancel selection mode. (lino_copy): Set the clip member of the cloned structure to null, otherwise there will be a double free of the clipboard buffer. (lino_cleanup): Free the clipboard and null out the pointer. * txr.1: Documented visual select.
* Adding flatcar* function.Kaz Kylheku2015-09-191-9/+13
| | | | | | | | | | | | * eval.c (eval_init): Registered flatcar* intrinsic. * lib.c (lazy_flatcar_scan, lazy_flatcar_func): New static functions. (lazy_flatcar): New function. * lib.h (lazy_flatcar): Declared. * txr.1: Documented, also touching flatten documentation.
* Atom insert feature.Kaz Kylheku2015-09-181-0/+19
| | | | | | | | * parser.c (provide_atom): New static function. (repl): Register provide_atom with linenoise as atom callback. * txr.1: Documented.
* New function: flatcar.Kaz Kylheku2015-09-181-0/+34
| | | | | | | | | | * eval.c (eval_init): Register flatcar intrinsic. * lib.c (flatcar): New function. * lib.h (flatcar): Declared. * txr.1: Documented.
* linenoise: insert previous word featureKaz Kylheku2015-09-181-0/+13
| | | | | | | | * linenoise/linenoise.c (edit): Ctrl-X Ctrl-W, or Ctrl-X w, with an optional number in between, cause a word from the previous line to be inserted. * txr.1: Documented.
* Doc fix under getpwnam.Kaz Kylheku2015-09-181-1/+1
| | | | * txr.1: Description wrongly refers to getpwuid.
* Improved ~/.txr_profile checks, with security.Kaz Kylheku2015-09-181-2/+12
| | | | | | | | | | * parser.c (load_rcfile): Use path-exists-p for the existence check. Since that doesn't throw, it's outside of the catch section. Use path-private-to-me-p to impose a security check on the profile file. If an error exception is caught, show the details. * txr.1: Added notes about security check.
* New function path-private-to-me.Kaz Kylheku2015-09-171-0/+35
| | | | | | | | | * lisplib.c (path_test_set_entries: "path-private-to-me-p" addred to name array. * share/txr/stdlib/path-test.tl (path-private-to-me-p): New function. * txr.1: Documented path-private-to-me.
* Add unix group database functions.Kaz Kylheku2015-09-171-0/+78
| | | | | | | | | | | | | | | | | | * configure (have_grgid): New variable. New tests added for getgrent and the rest. (HAVE_GRGID, HAVE_GRGID_R): New preprocessor symbols conditionally deposited into config/config.h. * sysif.c (group_s, mem_s): New global symbol variables. (setgrent_wrap, endgrent_wrap, fill_group, make_grstruct, get_grent_wrap, getgrgid_wrap, getgrnam_wrap): New static functions. (sysif_init): New global symbol variables initialized. New group struct type instantiated. Intrinsic functions setgrent, endgrent, getgrent, getgrgid and getgrnam registered. * txr.1: Documented group structure and functions.
* linenoise: Ctrl-X Ctrl-V super verbatim mode.Kaz Kylheku2015-09-171-0/+11
| | | | | | | | * linenoise/linenoise.c (edit): Support a verbatim entry mode with limited commands, in which most characters self-insert, including Enter. * txr.1: Documented.
* Version 116.txr-116Kaz Kylheku2015-09-171-2/+2
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Listener configuration variables.Kaz Kylheku2015-09-171-7/+39
| | | | | | | | | | | | | | | | | | * linenoise/linenoise.c (lino_get_multiline): New function. * linenoise/linenoise.h (lino_get_multiline): Declared. * parser.c (listener_hist_len, listener_multi_line_p_s): New symbol global variables. (repl): Set linenoise history length and multi-line mode from the *listener-hist-len* and *listener-multi-line-p* variables on each call. Set the *listener-multi-line* variable from the lino_t object's current state after each linenoise call. (parse_init): Initialize new global variables and register them as special variables. * txr.1: Update sentence which says that history is fixed at 100 lines. Document listener configuration variables.
* Describe listener limitations.Kaz Kylheku2015-09-161-0/+7
| | | | * txr.1: New section about line length limit and other restrictions.
* Rearrange some subsections.Kaz Kylheku2015-09-161-36/+37
| | | | | * txr.1: Clear Screen, Suspend, and History Persistence are not editing commands. They get their own sections.
* linenoise: edit command line in external editor.Kaz Kylheku2015-09-161-0/+24
| | | | | | | | * linenoise/linenoise.c (tr, edit_in_editor): New static functions. (edit): edit_in_editor hooked in under Ctrl-X Ctrl-E. * txr.1: Documented.
* linenoise: enhanced multi-line mode with line breaks.Kaz Kylheku2015-09-161-3/+33
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The linenoise multi-line mode is just a glorified line wrapper, and not actualy a multi-line editor, like in GNU Readline and others. This commit fixes it. The edit buffer can now contain line breaks, separated by carriage return characters. (In single-line mode, these characters continue to be displayed as ^M). The row and column calculations in the multi-line refresh follow this data representation. * linenoise/linenoise.c (sync_data_to_buf): This function now takes an extra argument telling it whether multi-line mode is in effect for the rendering. In multi-line mode, the prompt is now added to the display data, so that multi-line refresh is simplified by not having to account for the prompt length in various calculations. Also, in multi-line mode, carriage returns are rendered to display as CR-LF pairs, since they denote embedded line breaks. (complete_line): Pass mlmode to sync_data_to_buf. (struct row_values): New struct, for returning multiple row values out of a function. (screen_rows, col_offset_in_str): New static functions. (refresh_multiline): Modified to use screen_rows and col_offset_in_str for its calculations, and not to deal with the prompt at all, since the prompt is rolled into the display data. (refresh_line, edit_insert): Pass mlmode to sync_data_to_buf. * txr.1: Documented multi-line mode.
* linenoise: parenthesis-matching backward jump.Kaz Kylheku2015-09-151-0/+22
| | | | | | | | | | | * linenoise/linenoise.c (LINENOISE_PAREN_DELAY): New preprocessor symbol. (scan_match_rev, scan_rev, usec_delay, paren_jump): New static functions. (edit): Handle closing parenthesis, bracket and brace by inserting and calling paren_jump. * txr.1: Documented.
* Wording and grammar fix under permutationsKaz Kylheku2015-09-151-3/+3
| | | | | * txr.1: Fix inappropriately copy and pasted ungrammatical text "permutations is of zero length".
* Implement ~/.txr_profile mechanism.Kaz Kylheku2015-09-131-0/+22
| | | | | | | | | | | | * parser.c (load_rcfile): New function. (repl): Compute profile file name and try to load it before entering loop. * sysif.c (statp): Linkage becomes external. * sysif.h (statp): Declaration updated. * txr.1: Documented.
* linenoise: recognize additional commands in search.Kaz Kylheku2015-09-131-3/+7
| | | | | | | | | * linenoise/linenoise.c (history_search): Editing keys should leave search mode and be processed in command mode. Also, let's have Ctrl-L and Ctrl-Z work, but stay in search mode. * txr.1: Documented.
* linenoise: support completion in the middle of line.Kaz Kylheku2015-09-121-5/+3
| | | | | | | | | * linenoise/linenoise.c (compare_completions): Restructure with help of new lino_copy function to collect completions just for the prefix of the line up to the cursor position, and recombine those with the suffix. * txr.1: Doc updated.
* linenoise: incorrect ESC treatment in completion.Kaz Kylheku2015-09-121-12/+1
| | | | | | | | | | * linenoise/linenoise.c (complete_line): ESC must not be treated specially when leaving completion mode; it must accept the completed line. The original code did this wrong in my opinion and I propagated the error. * txr.1: Remove all mention of special ESC treatment in completion mode.
* linenoise: Suppress unknown control characters.Kaz Kylheku2015-09-121-5/+7
| | | | | | | * linenoise/linenoise.c (edit): Don't let characters less than 32 be inserted. * txr.1: Documented that control characters are rejected.
* linenoise: Ctrl-R searchKaz Kylheku2015-09-121-0/+45
| | | | | | | | | | | * linenoise/linenoise.c (next_hist_match, history_search): New static function. (edit): New Ctrl-R case added to early switch that also handles Tab completion, and calls history_search. (lino_free): Adding null check, so we can safely call lino_free(0). history_search relies on this. * txr.1: Documented search.
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