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* * txr.1: Fix formatting problem.Kaz Kylheku2010-09-302-1/+7
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* Regex cleanup.Kaz Kylheku2010-03-011-18/+29
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* * txr.1: Fix inaccuracies: files are not read into memory all atKaz Kylheku2010-03-012-5/+10
| | | | once, and a query doesn't execute if it had errors.
* Version 034.txr-034Kaz Kylheku2010-02-284-4/+16
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* More testcases.Kaz Kylheku2010-02-283-1/+15
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* Whitespace.Kaz Kylheku2010-02-281-1/+1
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* New testcase for freeform.Kaz Kylheku2010-02-285-0/+45
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* Improved freeform documentation.Kaz Kylheku2010-02-281-1/+52
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* * lib.c (length_str_gt, length_str_ge, length_str_lt, length_str_le):Kaz Kylheku2010-02-282-36/+69
| | | | Added missing support for literal string type.
* * lib.c (search_str): Bugfix for empty haystack case: checks for endKaz Kylheku2010-02-272-2/+8
| | | | | of string must use postincrement on the index, otherwise the access goes past the null terminator.
* * match.c (match_lines): Bugfix in freeform directive.Kaz Kylheku2010-02-272-1/+14
| | | | | | | | | | If the virtual line is partially matched, the remainder of the line is folded back into list form. In this case, the data line number must be incremented. Otherwise the calling context may conclude that no progress was made, and skip a line of input. I.e. the unmatched part of the input is a new line, even if there had originally been no line break at that point.
* * lib.h (split_str_sep): Declared.Kaz Kylheku2010-02-273-5/+34
| | | | | | | | | * lib.c (split_str_sep): New function. (split_str): Semantics changed; the second argument is not a set of separator characters (like in split_str_sep) but rather a separator string. Fixed bug: if the input string is empty, the output list is empty. This caused infinite looping behavior in @(freeform).
* * lib.c (init_str): Bugfix: copy only len characters, not len + 1, soKaz Kylheku2010-02-242-1/+8
| | | | | | that we don't clobber the null terminator in the target string, or try read past the end of the source data. This affects the @(freeform) directive.
* Version 033.Kaz Kylheku2010-01-264-4/+17
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* Restoring missing ChangeLog entry.Kaz Kylheku2010-01-261-1/+14
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* hash.c (hash_process_weak): There is no point in fixing upKaz Kylheku2010-01-262-18/+24
| | | | | | the type codes of spuriously reached nodes; reached objects will not be removed by weak processing and so it's better to just detect those situations and short-circuit.
* Fix inaccurate comment.Kaz Kylheku2010-01-261-4/+4
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* Optimization in derivative-based regex engine.Kaz Kylheku2010-01-264-1/+91
| | | | | | | | Exponential memory consumption behavior was observed when matching the input aaaaaa.... against the regex a?a?a?a?....aaaa.... The fix is to eliminate common subexpressions from the derivative for the or operator.
* Merge branch 'master' of ssh://kkylheku@git.sv.gnu.org/srv/git/txrKaz Kylheku2010-01-255-4/+34
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| * Version 032.Kaz Kylheku2010-01-255-3/+19
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| * Version 031.txr-031Kaz Kylheku2010-01-254-4/+18
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* | Fixing weak hash tables.Kaz Kylheku2010-01-253-7/+16
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* Fix screwup in previous change: value treated as a consKaz Kylheku2010-01-252-3/+2
| | | | in a code path where it sometimes isn't.
* * match.c (match_files): Workaround for GC issueKaz Kylheku2010-01-242-0/+10
| | | | | | | discovered on Red Hat EL 4 with gcc 3.4.3. In the collect loop, set car(success) to nil. Somehow the generated code hangs on to the last matching position for a regex, preventing GC.
* * stream.c (vformat_num): Fix bad width calculation.Kaz Kylheku2010-01-242-1/+5
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* Fix for unbounded memory growth problem reproduced with GCC 4.4.1Kaz Kylheku2010-01-214-0/+35
| | | | | | on 32 bit x86 Fedora. This happens because the lazy list variable ``data'' in the match_files function is optimized to a register, but a stale value of that variable persists in the backing storage.
* * match.c (match_files): Reduce scope, and bogus use of, datalineKaz Kylheku2010-01-212-6/+7
| | | | variable.
* Whitespace.Kaz Kylheku2010-01-201-4/+0
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* Fix mangled bullets.Kaz Kylheku2010-01-201-7/+10
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* Escape spaces in arguments to .IP.Kaz Kylheku2010-01-201-3/+3
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* Remove unnecessary text.Kaz Kylheku2010-01-201-6/+3
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* Missing word.Kaz Kylheku2010-01-201-3/+3
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* Improved descriptions of regex syntax.Kaz Kylheku2010-01-201-80/+61
| | | | Concise precedence table replaces paragraphs.
* Version 030.txr-030Kaz Kylheku2010-01-194-3/+17
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* More regex grammar work.Kaz Kylheku2010-01-194-5/+17
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* Whitespace.Kaz Kylheku2010-01-191-1/+1
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* Resolving parser conflicts.Kaz Kylheku2010-01-193-18/+37
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* Oops.txr-029Kaz Kylheku2010-01-181-1/+1
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* Version 029.Kaz Kylheku2010-01-184-6/+22
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* * regex.c (reg_derivative_list, reg_derivative): RecognitionKaz Kylheku2010-01-182-6/+39
| | | | | | | | | of cases to reduce consing. In reg_derivative_list, we avoid consing the full or expression if either branch is t, and also save a cons when the first element has a null derivative. In reg_derivative the oneplus and zeroplus cases are split, since zeroplus can re-use the input expression, when it's just a one-character match, deriving nil.
* Adjust semantics of non-greedy operator R%S, to avoid the brokenKaz Kylheku2010-01-183-21/+41
| | | | | | | | case whereby R%S matches nothing at all when S is not empty but equivalent to empty, or more generally when S is nullable. A much nicer definition is ``the intersection of R* and the set of all strings that do not contain a non-empty substring that matches S, followed by S''.
* Spelling; enhanced wording.Kaz Kylheku2010-01-181-5/+8
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* Spurious period.Kaz Kylheku2010-01-171-1/+1
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* Reduce doubled word.Kaz Kylheku2010-01-171-1/+1
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* Close parenthesis. De Morgan is two words.Kaz Kylheku2010-01-171-2/+2
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* Show "git head" version in bleeding-edge document.Kaz Kylheku2010-01-172-3/+3
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* Clarify that regexes /can/ match across multiple lines with @(freeform).Kaz Kylheku2010-01-171-4/+6
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* Fix bizarre edit mistake.Kaz Kylheku2010-01-171-3/+3
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* * parser.y (regterm, regclass): Relocate handlingKaz Kylheku2010-01-172-3/+8
| | | | of empty [] into regterm, via empty derivation.
* Regex syntactic tweaks: support the [] syntaxKaz Kylheku2010-01-163-6/+35
| | | | | to match no character and [^] as its complement, being synonymous with the wildcard dot.
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