(try_window_reusing_current_matrix): Don't call scroll run
function if run's current and desired position are the same;
this prevents cursor flickering.
(GET_CHAR_AFER_2): Remove.
(RE_TRANSLATE, RE_TRANSLATE_P): New macros moved from regex.h.
(enum re_opcode_t): Remove on_failure_jump_exclusive.
(print_partial_compiled_pattern, re_compile_fastmap)
(re_match_2_internal): Remove on_failure_jump_exclusive.
(regex_compile): Turn optimizable P+ loops into PP*, so that the
optimization only need to work for * (ie. can use of_keep_string_jump).
Remove the special case for .*\n since it is now covered by the general
optimization.
(re_search_2): Don't bother with `room'.
(skip_one_char): New function.
(skip_noops): Simplify since `memory' is not needed any more.
(mutually_exclusive_p): Restructure slightly to use `switch' and
add handling for "all" remaining cases.
(re_match_2_internal): Change on_failure_jump_smart to use
on_failure_keep_string_jump (and redirect the end-of-loop jump)
rather than on_failure_jump_exclusive.
POINTER_TO_OFFSET gives the same value before and after PREFETCH.
Use `dfail' to guarantee "atomic" matching.
(PTR_TO_OFFSET): Use POINTER_TO_OFFSET.
(debug): Now only active if > 0 rather than if != 0.
(DEBUG_*): Update for the new meaning of `debug'.
(print_partial_compiled_pattern): Add missing `succeed' case.
Use CHARSET_* macros in the charset(_not) branch.
Fix off-by-two bugs in `succeed_n', `jump_n' and `set_number_at'.
(store_op1, store_op2, insert_op1, insert_op2)
(at_begline_loc_p, at_endline_loc_p): Add prototype.
(group_in_compile_stack): Move to after its arg's types are declared
and add a prototype.
(PATFETCH): Define in terms of PATFETCH_RAW.
(GET_UNSIGNED_NUMBER): Add the usual `do { ... } while(0)' wrapper.
(QUIT): Redefine as a nop except for NTemacs.
(regex_compile): Handle intervals {,M} as if it was {0,M}.
Fix indentation of the greedy-op and shy-group code.
(at_(beg|end)line_loc_p): Fix argument's types.
(re_compile_fastmap): Ifdef out failure_stack_ptr to shut up gcc.
(re_search_2): Use POS_AS_IN_BUFFER. Simplify `room' computation.
(MATCHING_IN_FIRST_STRING): Remove.
(re_match_2): Use POS_AS_IN_BUFFER.
Ifdef out failure_stack_ptr to shut up gcc.
Use FIRST_STRING_P and POINTER_TO_OFFSET.
Use QUIT unconditionally.
(Vbytecomp_version_regexp): New variable.
(safe_to_load_p): New function.
(Fload): Handle files not compiled with Emacs specially.
(syms_of_lread): New Lisp variable load-dangerous-libraries.
string char type. It's `const unsigned char' to match the rest of Emacs.
Consistently make sure all pointers to strings use it and make sure all
pointers into the pattern use `unsigned char'.
(re_match_2_internal): Use `PREFETCH+STRING_CHAR' instead of
GET_CHAR_AFTER_2.
Also merge wordbound and notwordbound to reduce code duplication.
* charset.h (GET_CHAR_AFTER_2): Remove.
(GET_CHAR_BEFORE_2): Use unsigned chars, like everywhere else.
dos_set_window_size.
(Qbar, Qcursor_type, outside_cursor): New variables.
(syms_of_msdos): Intern and staticpro them.
(dos_ttraw) [__DJGPP__ >= 2, !HAVE_X_WINDOWS]: Save the cursor
shape used outside Emacs when called for the first time.
(dos_ttcooked) [__DJGPP__ >= 2, !HAVE_X_WINDOWS]: Restore the
cursor shape used outside Emacs.
(msdos_set_cursor_shape, IT_set_cursor_type): New functions.
(IT_frame_up_to_date): Call IT_set_cursor_type, in case the cursor
type has changed.
(IT_set_frame_parameters): Call IT_set_cursor_type if the frame
parameters specify the cursor. Make qreverse a global
variable (renamed to Qreverse).
by bugs revealed when trying to add shy-groups. Overall, what happened
is that loops are now structured a little differently, groups can be
shy and the code is a little simpler.
(enum re_opcode_t): Remove jump_past_alt, maybe_pop_jump,
push_dummy_failure and dumy_failure_jump.
Add on_failure_jump_(exclusive, loop and smart).
Also fix the comment for (start|stop)_memory since they now only take
one argument (the second has becomes unnecessary).
(print_partial_compiled_pattern): Adjust for changes in re_opcode_t.
(print_compiled_pattern): Use %ld to printf long ints and flush to make
debugging a little easier.
(union fail_stack_elt): Make the integer unsigned.
(struct fail_stack_type): Add a `frame' element.
(INIT_FAIL_STACK): Init `frame' as well.
(POP_PATTERN_OP): New macro for re_compile_fastmap.
(DEBUG_PUSH, DEBUG_POP): Remove.
(NUM_REG_ITEMS): Remove.
(NUM_NONREG_ITEMS): Adjust.
(FAILURE_PAT, FAILURE_STR, NEXT_FAILURE_HANDLE, TOP_FAILURE_HANDLE):
New macros for the cycle detection.
(ENSURE_FAIL_STACK): New macro for PUSH_FAILURE_(REG|POINT).
(PUSH_FAILURE_REG, POP_FAILURE_REG, CHECK_INFINITE_LOOP): New macros.
(PUSH_FAILURE_POINT): Don't push registers any more.
The pattern address pushed is not the destination of the jump
but the source of it instead.
(NUM_FAILURE_ITEMS): Remove.
(POP_FAILURE_POINT): Adapt to the new stack structure (i.e. pop
registers before the actual failure point).
Don't hardcode any meaning for str==NULL anymore.
(union register_info_type, REG_MATCH_NULL_STRING_P, IS_ACTIVE)
(MATCHED_SOMETHING, EVER_MATCHED_SOMETHING, SET_REGS_MATCHED): Remove.
(REG_UNSET_VALUE): Use NULL (why not?).
(compile_range): Remove declaration since it doesn't exist.
(struct compile_stack_elt_t): Remove inner_group_offset.
(old_reg(start|end), reg_info, reg_dummy, reg_info_dummy): Remove.
(regex_grow_registers): Remove dead code.
(FIXUP_ALT_JUMP): New macro.
(regex_compile): Add shy-groups
Change loops to use on_failure_jump_smart&jump instead of
on_failure_jump&maybe_pop_jump.
Change + loops to eliminate the initial (dummy_failure_)jump.
Remove c1_base (looks like unused variable to me).
Use `jump' instead of `jump_past_alt' and don't bother with
push_dummy_failure in alternatives since it is now unnecessary.
Use FIXUP_ALT_JUMP.
Eliminate a useless `#ifdef emacs' for (re)allocating the stack.
(re_compile_fastmap): Remove dead variables i and num_regs.
Exit from loop when bufp->can_be_null rather than jumping to `done'.
Avoid jumping backwards so as to ensure termination.
Use PATTERN_STACK_EMPTY and POP_PATTERN_OP.
Improved handling of backreferences.
Remove dead code in handling of `anychar'.
(skip_noops, mutually_exclusive_p): New functions taken from the
handling of `maybe_pop_jump' in re_match_2_internal.
Slightly improve mutually_exclusive_p to handle ".+\n".
((lowest|highest)_active_reg, NO_(LOWEST|HIGHEST)_ACTIVE_REG)
Remove.
(re_match_2_internal): Use %p instead of 0x%x when printf'ing ptrs.
Don't SET_REGS_MATCHED anymore. Remove many dead variables.
Push register (in `start_memory') on the stack rather than storing it
in old_reg(start|end).
Remove the cycle detection from `stop_memory', replaced by the use
of on_failure_jump_loop for greedy loops.
Add code for the new on_failure_jump_<foo>.
Remove ad-hoc code in `on_failure_jump' to push more registers
in the case of a loop.
Take out code from `maybe_pop_jump' into separate functions and
adapt it to the semantics of `on_failure_jump_smart'.
Remove jump_past_alt, dummy_failure_jump and push_dummy_failure.
Remove dummy_failure handling and handling of `failures to jump
to on_failure_jump' (this last one was already dead code, it seems).
((group|alt|common_op)_match_null_string_p): Remove.
