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CVS commit: pkgsrc/textproc/py-snowballstemmer
Module Name: pkgsrc
Committed By: wiz
Date: Sun May 11 10:33:49 UTC 2025
Modified Files:
pkgsrc/textproc/py-snowballstemmer: Makefile PLIST distinfo
Log Message:
py-snowballstemmer: update to 3.0.1.
Snowball 3.0.1 (2025-05-09)
===========================
Python
------
* The __init__.py in 3.0.0 was incorrectly generated due to a missing
build dependency and the list of algorithms was empty. First reported by
laymonage. Thanks to Dmitry Shachnev, Henry Schreiner and Adam Turner for
diagnosing and fixing. (#229, #230, #231)
* Add trove classifiers for Armenian and Yiddish which have now been registered
with PyPI. Thanks to Henry Schreiner and Dmitry Shachnev. (#228)
* Update documented details of Python 2 support in old versions.
Snowball 3.0.0 (2025-05-08)
===========================
Ada
---
* Bug fixes:
+ Fix invalid Ada code generated for Snowball `loop` (it was partly Pascal!)
None of the stemmers shipped in previous releases triggered this bug, but
the Turkish stemmer now does.
+ The Ada runtime was not tracking the current length of the string
but instead used the current limit value or some other substitute, which
manifested as various incorrect behaviours for code inside of `setlimit`.
+ `size` was incorrectly returning the difference between the limit and the
backwards limit.
+ `lenof` or `sizeof` on a string variable generated Ada code that didn't
even compile.
+ Fix incorrect preconditions on some methods in the runtime.
+ Fix bug in runtime code used by `attach`, `insert`, `<-` and string
variable assignment when a (sub)string was replaced with a larger string.
This bug was triggered by code in the Kraaij-Pohlmann Dutch stemmer
implementation (which was previously not enabled by default but is now the
standard Dutch stemmer).
+ Fix invalid code generated for `insert`, `<-` and string variable
assignment. This bug was triggered by code in the Kraaij-Pohlmann
Dutch stemmer implementation (which was previously not enabled by default
but is now the standard Dutch stemmer).
+ Generate valid code for programs which don't use `among`. This didn't
affect code generation for any algorithms we currently ship.
+ If the end of a routine was unreachable code the Snowball compiler
would think the start of the next routine was also unreachable and would
not generate it. This didn't affect code generation for any algorithms we
currently ship.
* Code quality:
+ Only declare variables A and C when each is needed.
+ Fix indentation of generated declarations.
+ Drop extra blank line before `Result := True`.
C/C++
-----
* Bug fixes:
+ Fix potential NULL dereference in runtime code if we failed to allocate
memory for the p or S member for a Snowball program which uses one or more
string variables. Problem was introduced in Snowball 2.0.0. Fixes #206,
reported by Maxim Korotkov.
+ Fix invalid C code generated when a failure is handled in a context with
the opposite direction to where it happened, for example:
externals (stem)
define stem as ( try backwards 'x' )
This was fixed by changing the C generator to work like all the other
generators and pre-generate the code to handle failure.
+ Eliminate assumptions that NULL has all-zero bit pattern. We don't know
of any current platforms where this assumption fails, but the C standard
doesn't require an all-zero bit pattern for NULL. Fixes #207.
* Optimisations:
+ Store index delta for among substring_i field. This makes trying
substrings after a failed match slightly faster because we can just add
the offset to the pointer we already have to the current element.
* Code quality:
+ Improve formatting of generated code.
C#
--
* Bug fixes:
+ Add missing runtime support for testing for a string var at the current
position when working forwards. This situation isn't exercised by any of
the stemming algorithms we currently ship.
+ Adjust generated code to work around a code flow analysis bug in the `mcs`
C# compiler.
* Code quality:
+ Prune unused `using System.Text;`.
+ Generate C# with UTF-8 source encoding. This makes the generated code
easier to follow, which helps during development. It's also a bit smaller.
For now codepoints U+0590 and above are still emitted as escape sequences
to avoid confusing source code rendering when LTR scripts are involved.
Go
--
* Optimisations:
+ Drop some unneeded Go code generated for string `$`. None of the shipped
stemmers use string `$`, though the Schinke Latin stemmer algorithm on the
website does.
* Code quality:
+ Dispatch among result with `switch` instead of an `if` ... `else if` chain
(which looks like we did because the Go generator evolved from the Python
generator and Python didn't used to have a switch-like construct. This
doesn't make a measurable speed difference so it seems the Go compiler is
optimising both to equivalent code, but using a switch here seems clearer,
a better match for the intent, and is a bit simpler to generate.
+ Generate Go with UTF-8 source encoding. This makes the generated code
easier to follow, which helps during development. It's also a bit smaller.
For now codepoints U+0590 and above are still emitted as escape sequences
to avoid confusing source code rendering when LTR scripts are involved.
Java
----
* The Java code generated by Snowball requires now requires Java >= 7. Java 7
was released in 2011, and Java 6's EOL was 2013 so we don't expect this
to be a problematic requirement. See #195.
* Optimisations:
+ We now store the current string in a `char[]` rather than using a
`StringBuilder` to reduce overheads. The `getCurrent()` method continues
to return a Java `String`, but the `char[]` can be accessed using the new
`getCurrentBuffer()` and `getCurrentBufferLength()` methods. Patch from
Robert Muir (#195).
+ Use a more efficient mechanism for calling `among` functions. Patch from
Robert Muir (#195).
* Code quality:
+ Consistently put `[]` right after element type for array types, which seems
the most used style.
+ Fix javac warnings in SnowballProgram.java.
+ Improve formatting of generated code.
Javascript
----------
* Bug fixes:
+ Use base class specified by `-p` in string `$` rather than hard-coding
`BaseStemmer` (which is the default if you don't specify `-p`). None of
the shipped stemmers use string `$`, though the Schinke Latin stemmer
algorithm on the website does.
* Code quality:
+ Modernise the generated code a bit. Loosely based on changes proposed in
#123 by Emily Marigold Klassen.
* Other changes:
+ The Javascript runner is now specified by make variable `JSRUN` instead
of `NODE` (since node is just one JS implementation). The default value
is now `node` instead of `nodejs` (older Debian and Ubuntu packages used
`/usr/bin/nodejs` because `/usr/bin/node` was already in use by a
completely different package, but that has since changed).
Pascal
------
* Bug fixes:
+ Add missing semicolons to code generated in some cases for a function which
always succeeds or always fails. The new dutch.sbl was triggering this
bug.
+ If the end of a routine was unreachable code the Snowball compiler
would think the start of the next routine was also unreachable and would
not generate it. This didn't affect code generation for any algorithms we
currently ship.
* Code quality:
+ Eliminate commented out code generated for string `$`. None of the shipped
stemmers use string `$`, though the Schinke Latin stemmer algorithm on the
website does.
* Other changes:
+ Enable warnings, etc from fpc.
+ Select GNU-style diagnostic format.
Python
------
* Optimisations:
+ Use Python set for grouping checks. This speeds up running the Python
testsuite by about 4%.
+ Routines used in `among` are now referenced by name directly in the
generated code, rather than using a string containing the name. This
avoids a `getattr()` call each time an among wants to call a routine. This
doesn't seem to make a measurable speed difference, but it's cleaner and
avoids problems with name mangling. Suggested by David Corbett in #217.
+ Simplify code generated for `loop`. If the iteration count is constant and
at most 4 then iterate over a tuple which microbenchmarking shows is
faster. The only current uses of loop in the shipped stemmers are `loop 2`
so benefit from this. Otherwise we now use `range(AE)` instead of
`range (AE, 0, -1)` (the actual value of the loop variable is never
used so only the number of iterations matter).
* Bug fixes:
+ Correctly handle stemmer names with an underscore.
* Code quality:
+ Generate Python with UTF-8 source encoding. This makes the generated code
easier to follow, which helps during development. It's also a bit smaller.
For now codepoints U+0590 and above are still emitted as escape sequences
to avoid confusing source code rendering when LTR scripts are involved.
* Other changes:
+ Set python_requires to indicate to install tools that the generated code
won't work with Python 3.0.x, 3.1.x and 3.2.x (due to use of `u"foo"`
string literals). Closes #192 and #191, opened by Andreas Maier.
+ Add classifiers to indicate support for Python 3.3 and for 3.8 to 3.13.
Fixes #158, reported by Dmitry Shachnev.
+ Stop marking the wheel as universal, which had started to give a warning
message. Patch from Dmitry Shachnev (#210).
+ Stop calling `setup.py` directly which is deprecated and now produces a
warning - use the `build` module instead. Patch from Dmitry Shachnev
(#210).
Rust
----
* Optimisations:
+ Shortcut unnecessary calls to find_among, porting an optimization from the
C generator. In some stemming benchmarks this improves the performance
of the rust english stemmer by about 27%. Patch from jedav (#202).
* Code quality:
+ Suppress unused_parens warning, for example triggered by the code generated
for `$x = x*x` (where `x` is an integer).
+ Dispatch `among` result with `match` instead of an `if` ... `else if` chain
(which looks like we did because the Rust generator evolved from the Python
generator and Python didn't used to have a switch-like construct. This
results in a 3% speed-up for an unoptimised Rust compile but doesn't seem
to make a measurable difference when optimising so it seems the Rust
compiler is optimising both to equivalent code. However using a `match`
here seems clearer, a better match for the intent, and is a bit simpler to
generate.
+ Generate Rust with UTF-8 source encoding. This makes the generated code
easier to follow, which helps during development. It's also a bit smaller.
For now codepoints U+0590 and above are still emitted as escape sequences
to avoid confusing source code rendering when LTR scripts are involved.
New stemming algorithms
-----------------------
* Add Esperanto stemmer from David Corbett (#185).
* Add Estonian algorithm from Linda Freienthal (#108).
Behavioural changes to existing algorithms
------------------------------------------
* Dutch: Switch to Kraaij-Pohlmann as the default for Dutch. In case you
want Martin Porter's Dutch stemming algorithm for compatibility, this is now
available as `dutch_porter`. Fixes #1, reported by gboer.
* Dutch (Kraaij-Pohlmann): Fix differences between the Snowball implementation
and the original C implementation.
* Dutch (Kraaij-Pohlmann): Add a small number of exceptions to the Snowball
implementation to avoid unwanted conflations. This addresses all cases so
far identified which Martin's Dutch stemmer handled better. Fixes #208.
* Dutch (Porter): The "at least 3 characters" part of the R1 definition was
actually implemented such that when working in UTF-8 it was "at least 3
bytes". We stripped accents normally found in Dutch except for `è` before
setting R1, and no Dutch words starting `è` seem to stem differently
depending on encoding, but proper nouns and other words of foreign origin may
contain other accented characters and it seems better for the stemmer to
handle such words the same way regardless of the encoding in use.
* English: Replace '-ogist' with '-og' to conflate "geologist" and "geology", etc.
Suggested by Marc Schipperheijn on snowball-discuss.
* English: Add extra condition to undoubling. We no longer undouble if the
double consonant is preceded by exactly "a", "e" or "o" to avoid conflating
"add"/"ad", "egg"/"eg", "off"/"of", etc. Fixes #182, reported by Ed Page.
* English: Avoid conflating 'emerge' and 'emergency'. Reported by Frederick Ross
on snowball-discuss.
* English: Avoid conflating 'evening' and 'even'. Reported by Ann B on
snowball-discuss.
* English: Avoid conflating 'lateral' and 'later'. Reported by Steve Tolkin on
snowball-discuss.
* English: Avoid conflating 'organ', 'organic' and 'organize'.
* English: Avoid conflating 'past' and 'paste'. Reported by Sonny on
snowball-discuss.
* English: Avoid conflating 'universe', 'universal' and 'university'. Reported
by Clem Wang on snowball-discuss.
* English: Handle -eed and -ing exceptions in their respective rules.
This avoids the overhead of checking for them for the majority of
words which don't end -eed or -ing. It also allows us to easily handle
vying->vie and hying->hie at basically no extra cost. Reduces the time to
stem all words in our English word list by nearly 2%.
* French: Remove elisions as first step. See #187. Originally reported by
Paul Rudin and kelson42.
* French: Remove -aise and -aises so for example, "française" and "françaises"
are now conflated with "français". Fixes #209. Originally reported by
ririsoft and Fred Fung.
* French: Avoid incorrect conflation of `mauvais` (bad) with `mauve` (mauve,
mallow or seagull); avoid conflating `mal` with `malais`, `pal` with
`palais`, etc.
* French: Avoid conflating `ni` (neither/nor) with `niais`
(inexperienced/silly) and `nie`/`nié`/`nier`/`nierais`/`nierons` (to deny).
* French: -oux -> -ou. Fixes #91, reported by merwok.
* German: Replace with the "german2" variant. This normalises umlauts ("ä" to
"ae", "ö" to "oe", "ü" to "ue") which is presumably much less common in
newly created text than it once was as modern computer systems generally
don't have the limitations which motivated this, but there will still be
large amounts of legacy text which it seems helpful for the stemmer to
handle without having to know to select a variant.
On our sample German vocabulary which contains 35033 words, 77 words give
different stems. A significant proportion of these are foreign words, and
some are proper nouns. Some cases definitely seem improved, and quite a few
are just different but effectively just change the stem for a word or group
of words to a stem that isn't otherwise generated. There don't seem any
changes that are clearly worse, though there are some changes that have both
good and bad aspects to them.
Fixes #92, reported by jrabensc.
* German: Don't remove -em if preceded by -syst to avoid overstemming words
ending -system. This change means we now conflate e.g. "system" and
"systemen". Partly addresses #161, reported by Olga Gusenikova.
* German: Remove -erin and -erinnen suffixes which conflates singular and
plural female versions of nouns with the male versions. Fixes #85 and
partly addresses #161, reported by Olga Gusenikova.
* German: Replace -ln and -lns with -l. This improves 82 cases in the current
sample data without making anything worse. Tests on a larger word list look
good too. Partly addresses #161, reported by Olga Gusenikova.
* German: Remove -et suffix when we safely can. Fixes #200, reported by Robert
Frunzke.
* Greek: Fix "faulty slice operation" for input `ισαισα`. The fix changes
`ισα` to stem to `ισ` instead of the empty string, which seems better (and to
be what the second paper actually says to do if read carefully). Fixes #204,
reported by subnix.
* Italian: Address overstemming of "divano" (sofa) which previously stemmed to
"div", which is the stem for 'diva' (diva). Now it is stemmed to 'divan',
which is what its plural form 'divani' already stemmed to. Fixes #49,
reported by francesco.
* Norwegian: Improve stemming of words ending -ers. Fixes #175, reported by
Karianne Berg.
* Norwegian: Include more accented vowels - treating "ê", "ò", "ó" and "ô"
as vowels improves the stemming of a fairly small number of words, but
there's basically no cost to having extra vowels in the grouping, and some
of these words are commonly used. Fixes #218, reported by András Jankovics.
* Romanian: Fix to work with Romanian text encoded using the correct Unicode
characters. Romanian uses a "comma below" diacritic on letters "s" and "t"
("ș" and "ț"). Before Unicode these weren't easily available so Romanian
text was written using the visually similar "cedilla" diacritic on these
letters instead ("ş" and "ţ"). Previously our stemmer only recognised the
latter. Now it maps the cedilla forms to "comma below" as a first step.
Patch from Robert Muir.
* Spanish: Handle -acion like -ación and -ucion like -ución. It's apparently
common to miss off accents in Spanish, and there are examples in our test
vocabulary that these change helps. Proposed by Damian Janowski.
* Swedish: Replace suffix "öst" with "ös" when preceded by any of 'iklnprtuv'
rather than just 'l'. The new rule only requires the "öst" to be in R1
whereas previously we required all of "löst" to be. This second tweak
doesn't seem to affect any words ending "löst" but it conflates a few extra
cases when combined with the expanded list of preceding letters, and seems
more logical linguistically (since "ös" is akin to "ous" in English). Fixes
#152, reported by znakeeye.
* Swedish: Remove -et/-ets in cases where it helps. Removing -et can't be done
unconditionally because many words end in -et where this isn't a suffix.
However it's a very common suffix so it seems worth crafting a more complex
condition under which to remove. Fixes #47.
* Turkish: Remove proper noun suffixes. For example, `Türkiye'dir` ("it is
Turkey") is now conflated with `Türkiye` ("Turkey"). Fixes #188.
* Yiddish: Avoid generating empty stem for input "גע" (not a valid word, but
it's better to avoid an empty stem for any non-empty input).
Optimisations to existing algorithms
------------------------------------
* General change: Use `gopast` everywhere to establish R1 and R2 as it is a
little more efficient to do so.
* Basque: Use an empty action rather than replacing the suffix with itself
which seems clearer and is a little more efficient.
* Dutch (Porter): Optimise prelude routine.
* English: Remove unnecessary exception for `skis` as the algorithm stems
`skis` to `ski` by itself (`skies` and `sky` do still need a special case to
avoid conflation with `ski` though).
* Hungarian: We no longer take digraphs into account when determining where R1
starts. This can only make a difference to the stemming if we removed a
suffix that started with the last character of the digraph (or with "zs" in
the case of "dzs"), and that doesn't happen for any of the suffixes we remove
for any valid Hungarian words. This simplification speeds up stemming by
~2% on the current sample vocabulary list. See #216. Thanks to András
Jankovics for confirming no Hungarian words are affected by this change.
* Lithuanian: Remove redundant R1 check.
* Nepali: Eliminate redundant check_category_2 routine.
* Tamil: Optimise by using `among` instead of long `or` chains. The generated
C version now takes 43% less time to processes the test vocabulary.
* Tamil: Remove many cases which can't be triggered due to being handled by
another case.
* Tamil: Clean up some uses of `test`.
* Tamil: Make `fix_va_start` simpler and faster.
* Tamil: Localise use of `found_a_match` flag.
* Tamil: Eliminate pointless flag changes.
* Turkish: Minor optimisations.
Code clarity improvements to existing algorithms
------------------------------------------------
* Stop noting dates changes were made in comments in the code - we now maintain
a changelog in each algorithm's description page on the website (and the
version control history provides a finer grained view).
* Always use `insert` instead of `<+` as the named command seems clearer.
* English: Add comments documenting motivating examples for all exceptional
cases.
* Lithuanian: Change to recommended latin stringdef codes. Using common codes
makes it easier to work across algorithms, but they are more mnemonic so also
seem clearer when just considering this one algorithm.
* Serbian: Change to recommended latin stringdef codes. Using common codes
makes it easier to work across algorithms, but they are more mnemonic so also
seem clearer when just considering this one algorithm.
* Turkish: Use `{sc}` for s-cedilla and `{i}` for dotless-i to match other
uses.
Compiler
--------
* Generic code generation improvements:
+ Show Snowball source leafname in "generated" comment at start of files.
+ Add generic reachability tracking machinery. This facilitates various new
optimisations, so far the following have been implemented:
- Tail-calling
- Simpler code for calling routines which always give the same signal
- Simpler code when a routine ends in a integer test (this also allows
eliminating an Ada-specific codegen optimisation which did something
similar but only for routines which consisted *entirely* of a single
integer test.
- Dead code reporting and removal (only in simple cases currently)
Currently this overlaps in functionality with the existing reachability
tracking which is implemented on a per-language basis, and only for some
languages. This reachability tracking was originally added for Java
where some unreachable code is invalid and result in a compile time error,
but then seems to have been copied for some other newer languages which
may or may not actually need it. The approach it uses unfortunately
relies on correctly updating the reachability flag anywhere in the
generator code where reachability can change which has proved to be a
source of bugs, some unfixed. This new approach seems better and with some
more work should allow us to eliminate the older code. Fixes #83.
+ Omit check for `among` failing in generated code when we can tell at
compile time that it can't fail.
+ Optimise `goto`/`gopast` applied to a grouping or inverted grouping (which
is by far the most common way to use `goto`/`gopast`) for all target
languages (new for Go, Java, Javascript, Pascal and Rust).
+ We never need to restore the cursor after `not`. If `not` turns signal `f`
into `t` then it sets `c` back to its old position; otherwise, `not`
signals `f` and `c` will get reset by whatever ultimately handles this `f`
(or the program exits and the position of `c` no longer matters). This
slightly improves the generated code for the `english` and `porter`
stemmers.
+ Don't generate code for undefined or unused routines.
+ Avoid generating variable names and then not actually using them. This
eliminates mysterious gaps in the numbering of variables in the generated
code.
+ Eliminate `!`/`not` from integer test code by generating the inverse
comparison operator instead for all languages, e.g. for Python we now
generate
if self.I_p1 >= self.I_x:
instead of
if not self.I_p1 < self.I_x:
This isn't going to be faster in compiled languages with an optimiser but
for scripting languages it may be faster, and even if not, it makes for a
little less work when loading the script.
+ Canonicalise `hop 1` to `next` as the generated code for `next` can be
slightly more efficient. This will also apply to `hop` followed by a
constant expression which Snowball can reduce to `1`.
+ Avoid trailing whitespace in generated files.
+ Fix problems with --comments option:
- When generating C code we would segfault for code containing `atleast`,
`hop` or integer tests.
- Fix missing comments for some commands in some target languages.
- Fix inconsistent formatting of comments in some target languages.
- Comments in C are now always on their own line - previously some were
after at the end of the line and some on their own line which made them
harder to follow.
- Emit comments before `among` and before routine/external definitions.
+ Simplify more cases of numeric expressions (e.g. `x * 1` to `x`).
* Improve --help output.
* Division by zero during constant folding now gives an error.
* For `hop` followed by an unexpected token (e.g. `hop hop`) we were
already emitting a suitable error but would then segfault.
* Emit error for redefinition of a grouping.
* Improve errors for `define` of an undeclared name. We already peek at the
next token to decide whether to try to parse as a routine or grouping.
Previously we parsed as a routine if it was `as`, and a grouping otherwise,
but routine definitions are more common and a grouping can only start with
a literal string or a name, so now we assume a routine definition with a
missing `as` if the next token isn't valid for either.
* Suppress duplicate (or even triplicate) "unexpected" errors for the same
token when the compiler tried to recover from the error by adjusting the
parse stare and marking the token to be reparsed, but the same token then
failed to parse in the new state.
* Fix NULL pointer dereference if an undefined grouping is used in the
definition of another grouping.
* Fix mangled error for `set` or `unset` on a non-boolean:
test.sbl:2: nameInvalid type 98 in name_of_type()
* Emit warning if `=>` is used. The documentation of how it works doesn't
match the implementation, and it seems it has only ever been used in the
Schinke stemmer implementation (which assumes the implemented behaviour).
We've updated the Schinke implementation to avoid it. If you're using it
in your own Snowball code please let us know.
* Improve errors for unterminated string literals.
* Fix NULL pointer dereference on invalid code such as `$x = $y`.
* If malloc fails while compiling the compiler will now report the failure
and exit. Previously the NULL return from malloc wasn't checked for so
we'd typically segfault.
* `lenof` and `sizeof` applied to a string variable now mark the variable
as used, which avoids a bogus error followed by a confusing additional
message if this is the only use of that variable:
lenofsizeofbug.sbl:3: warning: string 's' is set but never used
Unhandled type of dead assignment via sizeof
This is situation is unlikely to occur in real world code.
* The reported line number for "string not terminated" error was one too high
in the case where we were in a stringdef (but correct if we weren't).
* Eliminate special handling for among starter. We now convert the starter
to be a command before the among, adding an explict substring if there
isn't one.
* We now warn if the body of a `repeat` or `atleast` loop always signals
`t` (meaning it will loop forever which is very undesirable for a stemming
algorithm) or always signals `f` (meaning it will never loop, which seems
unlikely to be what was intended).
* Release memory in compiler before exit. The OS will free all allocated
memory when a process exits, so this memory isn't actually leaked, but it can
be annoying with when using snowball as part of a larger build process with
some leak-finding tools. Patch from jsteemann in #166.
* Store textual data more efficiently in memory during Snowball compilation.
Previously almost all textual data was stored as 16 bit values, but most
such data only uses 8 bit character values. Doubling the memory usage
isn't really an issue as Snowball programs are tiny, but this also
complicated code handling such data. Now only literal strings use the
16 bit values.
* Fix clang -Wunused-but-set-variable warning in compiler code.
* Fix a few -Wshadow warnings in compiler and enable this warning by default.
* Tighten parsing of `writef()` format strings. We now error out on
unrecognised escape codes or if a numbered escape is used with too high a
number or a non-digit. This change reveals that the Go and Rust generators
were using invalid escape ~A - the old writef() code was substituting this
with just A which is what is wanted so this case was harmless but being
lenient here could hide bugs, especially when copying code between
generators as they don't all support the same set of format codes.
Build system
------------
* Turn on Java warnings and make them errors.
* Compile C code with -g by default. This makes debugging easier, and
matches the default for at least some other build systems (e.g. autotools).
* Fix "make clean" to remove all built Ada files.
* Clean `stemtest` too. Patch from Stefano Rivera.
* Add missing `COMMON_FILES` dependency to dist targets.
* GNUmakefile: Tidy up and make more consistent
* GNUmakefile: Make use of $* to improve speed and readability.
* Use $(patsubst ...) instead of sed in .java.class rule which gives cleaner
make output and is a bit more efficient.
* Add `WERROR` make variable to provide a way to add `-Werror` to existing
CFLAGS.
libstemmer
----------
Testsuite
---------
* Give a clear error if snowball-data isn't found. Fixes #196, reported by
Andrea Maccis.
* Handle not thinning testdata better. If THIN_FACTOR is set to 1 we no longer
run gzipped test data through awk. We also now handle THIN_FACTOR being set
empty as equivalent to 1 for convenience.
* csharp_stemwords: Correctly handle a stemmer name containing an underscore.
* csharp_stemwords: Make `-i` option optional and read from stdin if omitted,
like the C version does.
* csharp_stemwords: Process the input line by line which is more helpful for
interactive testing, and also a little faster.
* Fix Java TestApp to allow a single argument. The documented command line
syntax is that you only need to specify the language and there was already
code to read from stdin if no input file was specified, but at least two
command line options were required.
* Fix deprecation warning in TestApp.java.
* Optimise TestApp.java by creating fewer objects. Patch from Robert Muir.
* stemwords.py: We no longer create an empty output file if we fail to open the
input file.
* stemwords: Improve error message to say "Out of memory or internal error"
rather than just "Out of memory".
Documentation
-------------
* Include "what is stemming" section in each README.
* Include section on threads in each README. Based on patch for Python from
dbcerigo.
* Document that input should be lowercase with composed accents. See #186,
reported by 1993fpale.
* Add README section on building, including notes on cross-compiling. Fixes
#205, reported by sin-ack.
* CONTRIBUTING.rst: Clarify which charsets to list
* CONTRIBUTING.rst: Add general advice section. In particular, note to use
spaces-only for indentation in most cases. Thanks to Dmitry Shachnev for
raising this point.
* CONTRIBUTING.rst: Note that UTF-8 is OK in comments. Thanks to Dmitry
Shachnev for asking.
* Fix some typos. Patch from Josh Soref.
* Document that our CI now uses github actions.
* Update link to Greek stemmer PDF. Patch from Michael Bissett (#33).
Snowball 2.2.0 (2021-11-10)
===========================
New Code Generators
-------------------
* Add Ada generator from Stephane Carrez (#135).
Javascript
----------
* Fix generated code to use integer division rather than floating point
division.
Noted by David Corbett.
Pascal
------
* Fix code generated for division. Previously real division was used and the
generated code would fail to compile with an "Incompatible types" error.
Noted by David Corbett.
* Fix code generated for Snowball's `minint` and `maxint` constant.
Python
------
* Python 2 is no longer actively supported, as proposed on the mailing list:
https://lists.tartarus.org/pipermail/snowball-discuss/2021-August/001721.html
* Fix code generated for division. Previously the Python code we generated
used integer division but rounded negative fractions towards negative
infinity rather than zero under Python 2, and under Python 3 used floating
point division.
Noted by David Corbett.
Code quality Improvements
-------------------------
* C/C++: Generate INT_MIN and INT_MAX directly, including <limits.h> from
the generated C file if necessary, and remove the MAXINT and MININT macros
from runtime/header.h.
* C#: An `among` without functions is now generated as `static` and groupings
are now generated as constant. Patches from James Turner in #146 and #147.
Code generation improvements
----------------------------
* General:
+ Constant numeric subexpressions and constant numeric tests are now
evaluated at Snowball compile time.
+ Simplify the following degnerate `loop` and `atleast` constructs where
N is a compile-time constant:
- loop N C where N <= 0 is a no-op.
- loop N C where N == 1 is just C.
- atleast N C where N <= 0 is just repeat C.
If the value of N doesn't depend on the current target language, platform
or Unicode settings then we also issue a warning.
Behavioural changes to existing algorithms
------------------------------------------
* german2: Fix handling of `qu` to match algorithm description. Previously
the implementation erroneously did `skip 2` after `qu`. We suspect this was
intended to skip the `qu` but that's already been done by the substring/among
matching, so it actually skips an extra two characters.
The implementation has always differed in this way, but there's no good
reason to skip two extra characters here so overall it seems best to change
the code to match the description. This change only affects the stemming of
a single word in the sample vocabulary - `quae` which seems to actually be
Latin rather than German.
Optimisations to existing algorithms
------------------------------------
* arabic: Handle exception cases in the among they're exceptions to.
* greek: Remove unused slice setting, handle exception cases in the among
they're exceptions to, and turn `substring ... among ... or substring ...
among ...` into a single `substring ... among ...` in cases where it is
trivial to do so.
* hindi: Eliminate the need for variable `p`.
* irish: Minor optimisation in setting `pV` and `p1`.
* yiddish: Make use of `among` more.
Compiler
--------
* Fix handling of `len` and `lenof` being declared as names.
For compatibility with programs written for older Snowball versions
len and lenof stop being tokens if declared as names. However this
code didn't work correctly if the tokeniser's name buffer needed to
be enlarged to hold the token name (i.e. 3 or 5 elements respectively).
* Report a clearer error if `=` is used instead of `==` in an integer test.
* Replace a single entry command list with its contents in the internal syntax
tree. This puts things in a more canonical form, which helps subsequent
optimisations.
Build system
------------
* Support building on Microsoft Windows (using mingw+msys or a similar
Unix-like environment). Patch from Jannick in #129.
* Split out INCLUDES from CPPFLAGS so that CPPFLAGS can now be overridden by
the user if required. Fixes #148, reported by Dominique Leuenberger.
* Regenerate algorithms.mk only when needed rather than on every `make` run.
libstemmer
----------
* The libstemmer static library now has a `.a` extension, rather than `.o`.
Patch from Michal Vasilek in #150.
Testsuite
---------
* stemtest: Test that numbers and numeric codes aren't damaged by any of the
algorithms. Regression test for #66. Fixes #81.
* ada: Fix ada tests to fail if output differs. There was an extra `| head
-300` compared to other languages, which meant that the exit code of `diff`
was ignored. It seems more helpful (and is more consistent) not to limit how
many differences are shown so just drop this addition.
* go: Stop thinning testdata. It looks like we only are because the test
harness code was based on that for rust, which was based on that for
javascript, which was only thinning because it was reading everything into
memory and the larger vocabulary lists were resulting in out of memory
issues.
* javascript: Speed up stemwords.js. Process input line-by-line rather than
reading the whole file into memory, splitting, iterating, and creating an
array with all the output, joining and writing out a single huge string.
This also means we can stop thinning the test data for javascript, which we
were only doing because the huge arabic test data file was causing out of
memory errors. Also drop the -p option, which isn't useful here and
complicates the code.
* rust: Turn on optimisation in the makefile rather than the CI config. This
makes the tests run in about 1/5 of the time and there's really no reason to
be thinning the testdata for rust.
Documentation
-------------
* CONTRIBUTING.rst: Improve documentation for adding a new stemming algorithm.
* Improve wording of Python docs.
To generate a diff of this commit:
cvs rdiff -u -r1.8 -r1.9 pkgsrc/textproc/py-snowballstemmer/Makefile \
pkgsrc/textproc/py-snowballstemmer/distinfo
cvs rdiff -u -r1.6 -r1.7 pkgsrc/textproc/py-snowballstemmer/PLIST
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: pkgsrc/textproc/py-snowballstemmer/Makefile
diff -u pkgsrc/textproc/py-snowballstemmer/Makefile:1.8 pkgsrc/textproc/py-snowballstemmer/Makefile:1.9
--- pkgsrc/textproc/py-snowballstemmer/Makefile:1.8 Tue Apr 22 20:39:50 2025
+++ pkgsrc/textproc/py-snowballstemmer/Makefile Sun May 11 10:33:49 2025
@@ -1,8 +1,7 @@
-# $NetBSD: Makefile,v 1.8 2025/04/22 20:39:50 wiz Exp $
+# $NetBSD: Makefile,v 1.9 2025/05/11 10:33:49 wiz Exp $
-DISTNAME= snowballstemmer-2.2.0
+DISTNAME= snowballstemmer-3.0.1
PKGNAME= ${PYPKGPREFIX}-${DISTNAME}
-PKGREVISION= 2
CATEGORIES= textproc python
MASTER_SITES= ${MASTER_SITE_PYPI:=s/snowballstemmer/}
Index: pkgsrc/textproc/py-snowballstemmer/distinfo
diff -u pkgsrc/textproc/py-snowballstemmer/distinfo:1.8 pkgsrc/textproc/py-snowballstemmer/distinfo:1.9
--- pkgsrc/textproc/py-snowballstemmer/distinfo:1.8 Thu Nov 18 19:38:01 2021
+++ pkgsrc/textproc/py-snowballstemmer/distinfo Sun May 11 10:33:49 2025
@@ -1,5 +1,5 @@
-$NetBSD: distinfo,v 1.8 2021/11/18 19:38:01 adam Exp $
+$NetBSD: distinfo,v 1.9 2025/05/11 10:33:49 wiz Exp $
-BLAKE2s (snowballstemmer-2.2.0.tar.gz) = 7003153e7592ed98d73f2748d7b7103568a53acfc6367ace7568e5103005ac7a
-SHA512 (snowballstemmer-2.2.0.tar.gz) = f1dee83e06fc79ffb250892fe62c75e3393b9af07fbf7cde413e6391870aa74934302771239dea5c9bc89806684f95059b00c9ffbcf7340375c9dd8f1216cd37
-Size (snowballstemmer-2.2.0.tar.gz) = 86699 bytes
+BLAKE2s (snowballstemmer-3.0.1.tar.gz) = ff1118cc3bc93e279d7a3233d1b27ddfc0f10a462ba959e4db7d66883c815366
+SHA512 (snowballstemmer-3.0.1.tar.gz) = a9590da2b0be4b93a7500b337a63cf2039ff01a6da309ddb9462961c309b4763d4dfc925965a62376a9f3b41a05bb634d6472f1e2ee07e53b38f8542e7eada82
+Size (snowballstemmer-3.0.1.tar.gz) = 105575 bytes
Index: pkgsrc/textproc/py-snowballstemmer/PLIST
diff -u pkgsrc/textproc/py-snowballstemmer/PLIST:1.6 pkgsrc/textproc/py-snowballstemmer/PLIST:1.7
--- pkgsrc/textproc/py-snowballstemmer/PLIST:1.6 Tue Apr 22 20:39:50 2025
+++ pkgsrc/textproc/py-snowballstemmer/PLIST Sun May 11 10:33:49 2025
@@ -1,4 +1,4 @@
-@comment $NetBSD: PLIST,v 1.6 2025/04/22 20:39:50 wiz Exp $
+@comment $NetBSD: PLIST,v 1.7 2025/05/11 10:33:49 wiz Exp $
${PYSITELIB}/${WHEEL_INFODIR}/METADATA
${PYSITELIB}/${WHEEL_INFODIR}/RECORD
${PYSITELIB}/${WHEEL_INFODIR}/WHEEL
@@ -28,12 +28,21 @@ ${PYSITELIB}/snowballstemmer/catalan_ste
${PYSITELIB}/snowballstemmer/danish_stemmer.py
${PYSITELIB}/snowballstemmer/danish_stemmer.pyc
${PYSITELIB}/snowballstemmer/danish_stemmer.pyo
+${PYSITELIB}/snowballstemmer/dutch_porter_stemmer.py
+${PYSITELIB}/snowballstemmer/dutch_porter_stemmer.pyc
+${PYSITELIB}/snowballstemmer/dutch_porter_stemmer.pyo
${PYSITELIB}/snowballstemmer/dutch_stemmer.py
${PYSITELIB}/snowballstemmer/dutch_stemmer.pyc
${PYSITELIB}/snowballstemmer/dutch_stemmer.pyo
${PYSITELIB}/snowballstemmer/english_stemmer.py
${PYSITELIB}/snowballstemmer/english_stemmer.pyc
${PYSITELIB}/snowballstemmer/english_stemmer.pyo
+${PYSITELIB}/snowballstemmer/esperanto_stemmer.py
+${PYSITELIB}/snowballstemmer/esperanto_stemmer.pyc
+${PYSITELIB}/snowballstemmer/esperanto_stemmer.pyo
+${PYSITELIB}/snowballstemmer/estonian_stemmer.py
+${PYSITELIB}/snowballstemmer/estonian_stemmer.pyc
+${PYSITELIB}/snowballstemmer/estonian_stemmer.pyo
${PYSITELIB}/snowballstemmer/finnish_stemmer.py
${PYSITELIB}/snowballstemmer/finnish_stemmer.pyc
${PYSITELIB}/snowballstemmer/finnish_stemmer.pyo
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