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* Implement listener variable for selection style.Kaz Kylheku2016-05-192-17/+49
| | | | | | | | | | | * parser.c (listener_sel_inclusive_p_s): New symbol variable. (repl): Install current value of *listener-sel-inclusive-p* variable into linenoise. (parse_init): Initialize the symbol variable and register the Lisp special variable. * txr.1: Documented special variable and selection mode semantics.
* linenoise: support inclusive selection.Kaz Kylheku2016-05-192-3/+23
| | | | | | | | | | | | | | * linenoise/linenoise.c (struct lino_state): New mode flag, selinclusive. (lino_set_selinclusive, lino_get_selinclusive): New functions. (sync_data_to_buf): Adjust rightmost endpoint when selection is reversed and inclusive mode is in effect, so that the included character will be visually highlighted. (yank_sel, delete_sel): Adjust endpoint of selection if in in inclusive mode. * linenoise/linenoise.h (lino_set_selinclusive, lino_get_selinclusive): Declared.
* Help text upkeep.Kaz Kylheku2016-05-181-0/+7
| | | | | * txr.c (help): Note the existence of --args and --eargs, without giving a full description.
* Grammar under Dot Position in Function Calls.Kaz Kylheku2016-05-181-2/+2
| | | | * txr.1: maybe -> may be.
* Streamline text about where Lisp is evaluated.Kaz Kylheku2016-05-181-16/+14
| | | | | | * txr.1: Just list directives that take Lisp; drop the details. Point out that no @ is needed for access to Lisp variable.
* Fix outdated example.Kaz Kylheku2016-05-181-1/+1
| | | | | * txr.1: @ is not required on Lisp variables.
* Formatting fix under make-random-stateKaz Kylheku2016-05-181-1/+1
| | | | * txr.1: Mistake in syntax markup.
* Use sys_load_s symbol variable.Kaz Kylheku2016-05-181-1/+1
| | | | | | * eval.c (eval_init): Use sys_load_s variable set up earlier in the function instead of redundant call to intern.
* New feature: self-load-path symbol macro.Kaz Kylheku2016-05-186-8/+94
| | | | | | | | | | | | | | | | | | | | | * eval.c (self_load_path_s): New symbol variable. (sys_load): Save, set-up and restore self-load-path around load. (set_get_symacro): New function. (eval_init): Register load function using sys_load_s instead of redundant intern. * eval.h (set_get_symacro): Declared. * match.c (v_load): Save, set-up and restore self-load-path macro. * parser.c (load_rcfile): Likewise. * txr.c (txr_main: Set up self-load-path when opening file. * txr.1: Documented self-load-path.
* Add notes about cursor shape and selection semantics.Kaz Kylheku2016-05-181-0/+23
| | | | | | | * txr.1: In Interactive Listener sections, note what "character under the cursor" means when a vertical cursor is in effect, and add notes about how the selection semantics pairs well with that style of cursor.
* New functions: at-exit-call and at-exit-do-not-call.Kaz Kylheku2016-05-183-0/+69
| | | | | | | | | | | | | | * sysif.c (at_exit_list): New static variable. (at_exit_call, at_exit_do_not_call): New functions. (at_exit_handler): New static function. (sysif_init): GC-protect at_exit_list. Register at_exit_handler with C atexit function. Register intrinsic functions at-exit-call and at-exit-do-not-call. * sysif.h (at_exit_call, at_exit_do_not_call): Registered. * txr.1: Documented.
* Handle integer overflow in length_list.Kaz Kylheku2016-05-181-2/+14
| | | | | | * lib.c (length_list): Count using cnum only up to INT_PTR_MAX, then switch to bignums.
* Adding termios support.Kaz Kylheku2016-05-187-1/+1407
| | | | | | | | | | | | | | | | * Makefile (termios.o): New object file. * lib.c (init): Call termios_init. * lisplib.c (termios_set_entries, termios_instantiate): New functions. (lisplib_init): Register new functions in autoload table. * share/txr/stdlib/termios.tl: New file. * termios.c, termios.h: New files. * txr.1: Documented termios.
* Bugfix in checkman leading to doc improvements.Kaz Kylheku2016-05-172-39/+20
| | | | | | | | | | | * checkman.txr: Check against blank line after .desc. Fix incorrect pattern, failing to match one-symbol Function/Operator/Macro headings. This exposes errors in the document that were previously undetected. * txr.1: Fix numerous occurrences of blank lines after .desc, missing .desc, incorrect headings and other problems.
* Some streamlining in the cons recycling.Kaz Kylheku2016-05-152-11/+9
| | | | | | | | | | | * lib.c (rcyc_pop): Just assume that *plist points to a cons and access the fields directly. (rcyc_cons): Don't bother with rplacd. (rcyc_list): Don't bother with set macro. * regex.c (read_until_match): Defensive coding: locally ensure that rcyc_pop won't be called on a nil stack, which will now segfault.
* Bugfix: recycled conses play nice with gen GC.Kaz Kylheku2016-05-151-0/+3
| | | | | | | | | | * lib.c (cons): When we recycle a cons, it could be already in the mature generation. In that case, baby objects stored in its car or cdr violate the integrity of the heap. We must hint about this to the garbage collector. Test case: ./txr --gc-debug -p "(list* 'foo (zip '(a) (repeat '((gensym)))))"
* Fix incorrect comment.Kaz Kylheku2016-05-151-1/+1
| | | | | * gc.c (gc_set): Should say "promote obj to gen 1", not "to gen 0".
* Fix generational-GC bug in struct code.Kaz Kylheku2016-05-141-3/+5
| | | | | | | | | * struct.c (static_slot_ensure): In the case when we grow the array of static slots, we were allowing chk_manage_vec to initialize the newly added element. This is wrong, because it is just a plain assignment, which causes a mature object to point to a baby object. This bug caused static slots to contain junk.
* Support autoloading for methods.Kaz Kylheku2016-05-131-2/+22
| | | | | | | * struct.c (lookup_slot_load, lookup_static_slot_load): New functions. (slot, static_slot): Use auto-load wrappers for lower-level slot lookup functions.
* Bugfix in - and / functions.Kaz Kylheku2016-05-131-4/+4
| | | | | | | | | Improper handling of arguments in certain cases. Test case: [[flipargs -] 2 1]. Should yield -1; actual behavior is error. * lib.c (minusv, divv): Correct test for more arguments after extracting the leftmost one.
* Wrong argument defaulting in record-adapter.Kaz Kylheku2016-05-091-1/+1
| | | | | | | | * stream.c (record_adapter): Use default_bool_arg rather than tnil. Since rb->include_match ends up passed directly to read_until_match, which deals with argument defaulting, we could just store the argument value into the structure.
* Version 140.txr-140Kaz Kylheku2016-05-076-690/+737
| | | | | | | | | | * RELNOTES: Updated. * configure, txr.1: Bumped version and date. * share/txr/stdlib/ver.tl: Likewise. * txr.vim, tl.vim: Regenerated.
* Avoid unnecessary evaluation in argument defaulting.Kaz Kylheku2016-05-072-5/+1
| | | | | | | | * lib.h (default_arg): Inline function becomes macro, so we can avoid evaluating the default value expression when it is not needed. * lib.c (default_arg): Declaration removed.
* Argument of flush-stream now optional.Kaz Kylheku2016-05-072-3/+10
| | | | | | | | | * stream.c (flush_stream): Default the argument to std_output. (stream_init): Register flush-stream as having one optional arg. * txr.1: Updated flush-stream description.
* Get rid of txl prefix from symbols.Kaz Kylheku2016-05-071-23/+23
| | | | | | * genvim.txr: Let's not get rid of this just from the instructions comment, but from the internals. txl-* replaced with tl-*.
* Don't refer to .txl in install instructions.Kaz Kylheku2016-05-071-3/+3
| | | | | | * genvim.txr: "INSTALL-HOWTO" comment still talks about .txl files, an experimental suffix we didn't go with. Now fixed to .tl.
* Redundant addr in printed rep of string-input-stream.Kaz Kylheku2016-05-071-1/+1
| | | | | * stream.c (string_in_get_prop): Do not format stream address into name; the general stream_print_op already adds that.
* *args*, *args-full* and self-path in listener.Kaz Kylheku2016-05-071-8/+10
| | | | | | | * txr.c (txr_main): Register *args-full* variable before first branch to repl. In repl section, register or re-register *args* to any remaining args, and self-path to the string "listener".
* Replace abort with panic in setuid code.Kaz Kylheku2016-05-071-8/+7
| | | | | | * sysif.c (drop_privilege): If bailing due to a privilege management problem, use panic with a descriptive message instead of a plain abort.
* Adding panic macro, which throws a panic exception.Kaz Kylheku2016-05-074-2/+14
| | | | | | | | | | | * lib.c (panic_s): New symbol variable. (obj_init): Initialize panic_s. * lib.h (panic_s): Declared. * unwind.c (uw_init): Register panic exception. * unwind.h (panic): New macro.
* Cygwin and MinGW exception for GNU stack section.Kaz Kylheku2016-05-071-1/+1
| | | | | * jmp.S: Don't generate the .note.GNU-stack section on MinGW or Cygwin either.
* Less specific check for Cygwin in assembly code.Kaz Kylheku2016-05-071-1/+1
| | | | | jmp.S: check for __CYGWIN__ rather than __CYGWIN32__ for defining the DEFUN macro.
* New: standard stream redirection for subprocesses.Kaz Kylheku2016-05-072-11/+215
| | | | | | | | | | | | | | | | | | | When subprocesses are created using open-command, open-process, run or sh, any streams not bound by those functions are obtained from *stdin*, *stdout* or *stderr*, as appropriate. Thus manipulating these variables has the effect of redirecting not only local output within the program but over coprocesses as well. * stream.c (struct save_fds): New type. (FDS_IN, FDS_OUT, FDS_ERR): New macros. (fds_init, fds_subst, fds_swizzle, fds_restore): New static functions. (open_command, open_process, run): "Swizzle" and restore the standard file descriptors. * txr.1: Updated documentation of affected function.
* Some recent versions of flex contain // comment.Kaz Kylheku2016-05-061-1/+6
| | | | | | Makefile (lex.yy.c): Crudely and shamelessly filter lex.yy.c through sed to remove // commments, even if // occurs in a string literal or a /*...*/ comment which ends on that line.
* Copyright in --help text.Kaz Kylheku2016-05-051-1/+1
| | | | | txr.c (help): 2015 was so last year. Let's make it a range from 2009 to current.
* Condense --help text.Reini Urban2016-05-051-1/+0
| | | | | txr.c (help): Remove blank line between name and copyright line.
* Typo in --help.Reini Urban2016-05-051-1/+1
| | | | txr.c (help): "sare" -> "are".
* HACKING: typoReini Urban2016-05-051-1/+1
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* New --reexec option.Kaz Kylheku2016-05-054-1/+40
| | | | | | | | | | | | | | | | | This helps with setuid hash bang scripting on Mac OS, and other plaforms where the interpreter executed out of a hash bang script runs with orinary privilege, even if marked setuid. * sysif.c (exec_wrap): Static function turns extern. * sysif.h (exec-wrap): Declared. * txr.1: Documented --reexec. Added notes about setuid under Hash Bang Support. * txr.c (help): List --reexec option. (txr_main): Implement --reexec option.
* Reveal setgroups on Solaris.Kaz Kylheku2016-05-041-0/+5
| | | | | | | * configure (lang_flags): The declaration of setgroups requires the __EXTENSIONS__ macro. If the test fails, let's repeat it with that macro and if it succeeds, add that to lang_flags.
* Fix Vim syntax highlighting bugs.Kaz Kylheku2016-05-043-5/+5
| | | | | | | | * genvim.txr (txr_splicevar): This match must be contained. (txr_metanum): Must be contained in TXR, need not be contained in TXR Lisp. * txr.vim, tl.vim: Regenerated.
* Fix treatment of "false" in out-of-memory handler.Kaz Kylheku2016-05-041-1/+2
| | | | | | * txr.c (oom_realloc_handler): When terminating, only print the word false if the print-bindings option -B is in effect. Also, print it to standard output, not standard error.
* Somew new path access testing functions.Kaz Kylheku2016-05-043-31/+109
| | | | | | | | | | | | | | * lisplib.c (path_test_set_entries): New elements in the list for path-readable-to-me-p, path-read-writable-to-me-p, and path-strictly-private-to-me-p. * share/txr/stdlib/path-test.pl (sys:path-access): Test bitwise combinations of permissions, so read+write can be tested in one call. (path-readable-to-me-p, path-read-writable-to-me-p, path-strictly-private-to-me-p): New functions. * txr.1: Documented.
* Fix: path-writable-to-me bug, for root.Kaz Kylheku2016-05-041-1/+2
| | | | | | | | * share/txr/stdlib/path-test.tl (sys:path-access): Comment added to note use restriction to identical permissions for all three scopes. Fixed incorrect use of logior instead of logand which causes strict permission test to be applied to user even when testing for non-execute permisisons.
* Calculate sysroot even if executable is renamed.Kaz Kylheku2016-05-041-1/+17
| | | | | | | | | | | If txr is renamed to something else in the same installation directory, we can still calculate the sysroot. * txr.c (substitute_basename): New function. (sysroot_init): Make one more attempt to calculate the sysroot by substituting the actual base name of the program into the compile-time relative path, and using that path agains the full path name.
* Consolidate sysroot calculation.Kaz Kylheku2016-05-041-16/+19
| | | | | | | | | | | | * txr.c (sysroot_path): New static variable. (progpath): Variable renamed to prog_path. (sysroot_helper): Function removed. (maybe_sysroot): New function. (sysroot): Function now just catenates previously calculated sysroot path onto target without. (sysroot_init): Follow rename of progpath to prog_path. GC-protect sysroot_path. Calculate sysroot path; if not able, emit warning message and use empty string.
* Implement setgid script support.Kaz Kylheku2016-05-024-25/+87
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TXR now notices that it's running setgid, and implements setgid logic for scripts. * sysif.c (orig_egid, real_gid, is_setgid): New static variables. (repress_privilege): Treat real and effective group ID similarly to user ID. Save them in global variables, and set the is_setgid flag. (drop_privilege): Drop setgid privilege similarly to setuid. Operate selectively: if neither setuid nor setgid is in effect, do nothing, but if just one is in effect, don't do anything for the other. (simulate_setuid): Function renamed to simulate_setuid_setgid. A small change is made here: if the fstat fails, just drop privilege, don't abort. Implement setgid operation independently of setuid. The is_setgid and is_setuid flags are manipulated here now to get the drop_privileges function to selectively drop setuid if we are running a script which is only segid, or drop setgid if we are running a setuid only script. * sysif.h (simulate_setuid): Declaration name change to simulate_setuid_setgid. * txr.c (txr_main): Follow rename of simulate_setuid. * txr.1: SETUID OPERATION section changed to SETUID/SETGID operation, and setgid description worked into the text.
* Fix somewhat broken setuid privilege dropping.Kaz Kylheku2016-05-012-49/+103
| | | | | | | | | | | | | | | | | | | | | | * sysif.c (repress_privilege): Eliminate redundant getuid call. (drop_privilege): On some platforms, setuid(getuid()) will not drop setuid non-root privilege. This is fixed by using setresuid, if we have it, which we do on Linux. On platforms where we don't have setresuid, we try setuid(getuid()). Then after that if we are able to change our effective user ID to the one we dropped, we conclude that it didn't work and abort. (simulate_setuid): Call drop_privilege instead of repeating the naive privilege-dropping logic. Check the result of seteuid; if it fails, then drop privilege! Otherwise a txr that is setuid bob will continue running as bob, if it fails to enact setuid on a script owned by alice. * txr.1: Rewrite SETUID OPERATION section in an attempt to clarify the wording, fix formatting issues, and describe the current implemenation of privilege dropping.
* Adding getresuid, getresuid, getresgid and setresgid.Kaz Kylheku2016-05-013-0/+107
| | | | | | | | | | | * configure: Test for these functions. * sysif.c (getresuid_wrap, getresgid_wrap, setresuid_wrap, setresgid_wrap): New static function. (sysif_init): Registered getresuid, setresgid, setresuid and setresgid intrinsics. * txr.1: Documented all four functions.
* Adding setgroups function.Kaz Kylheku2016-05-013-12/+90
| | | | | | | | | | | * configure: Test for setgroups. New HAVE_SETGROUPS preprocessor symbol for config/config.h. * sysif.c (setgroups_wrap): New static function. (sysif_init): Register intrinsic setgroups function. * txr.1: Documented setgroups. Rearranged sections so getgroups and setgroups descriptions are consecutive.
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