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\name{NEWS}
\title{NEWS file for the selectr package}
\encoding{UTF-8}
\section{Changes in version 0.4-2}{
\subsection{MINOR CHANGES}{
\itemize{
\item Improve handling of vectors of length > 1 in logical comparison.
Contributed by Garrick Aden-Buie.
\item Minor improvements to error message construction.
Contributed by Michael Chirico.
}
}
}
\section{Changes in version 0.4-1}{
\subsection{BUG FIXES}{
\itemize{
\item When the \pkg{R.oo} package is attached, the use of class
selectors no longer worked. This is due to the use of the \code{Class}
name for \pkg{R.oo}'s base class object, where \pkg{selectr} was also
using it (but not exporting) the same name of \code{Class} for
representing a class selector. Consequently, \pkg{selectr}'s code was
changed to rename the class to avoid any clashing. Because it was not
exported, this is purely an internal change. Thanks to
Francois Lemaire-Sicre for reporting the issue.
}
}
}
\section{Changes in version 0.4-0}{
\subsection{MINOR CHANGES}{
\itemize{
\item Large rewrite of internals to use the R6 OO system instead of
Reference Classes. This does not affect any external facing code as the
results should be identical to the previous implementation, which is why
this change is marked as minor. Initial and crude performance testing
(by running the test suite) indicates that the R6 implementation is
approximately twice as fast at generating XPath as the Reference Classes
implementation.
\item The minimum required version of R for \pkg{selectr} has been
increased from \code{2.15.2} to \code{3.0} as that is the minimum
required version of \pkg{R6}.
\item Minor performance enhancements have been made. Not only is
\pkg{R6} faster than Reference Classes, the use of string formatting
has been replaced with string concatenation. Additionally dynamic
calling of methods via \code{do.call()} has been replaced with direct
method calls.
}
}
\subsection{BUG FIXES}{
\itemize{
\item The issues in previous releases where methods can sometimes be
missing should now be resolved. The bug appeared to lie in core
Reference Classes code. By switching to \pkg{R6}, this type of issue
should no longer be possible.
}
}
}
\section{Changes in version 0.3-2}{
\subsection{MINOR CHANGES}{
\itemize{
\item Improved method registration for \pkg{XML} and \pkg{xml2}
objects. Avoids checks on each use and is only performed once per
dependent package load/unload.
}
}
\subsection{BUG FIXES}{
\itemize{
\item In some environments, reference class methods were missing at
runtime. This appears to be due to some internal behaviour in them
\pkg{methods} package where methods are registered on an objects when
the \code{$} operator is used for a field or method. Instead, when
a method is missing, they are manually bound to the object.
}
}
}
\section{Changes in version 0.3-1}{
\subsection{MINOR CHANGES}{
\itemize{
\item Enabled partial matching on the translator argument to
\code{css_to_xpath()}. Instead of defaulting to a generic translator,
a non-matching argument will be returned with an error.
\item Introduced many more unit tests via the \pkg{covr} package.
This enabled dead code to be trimmed and also identified areas of code
which needed improvement. Minor enhancements include: tolerate
whitespace within a \code{:not()}, more consistent results returned
from parser methods, improvements to argument parsing.
}
}
\subsection{BUG FIXES}{
\itemize{
\item The \code{|=} attribute matching operator was not being parsed
correctly for the generic translator.
\item Handle scenario where a CSS comment is unclosed. Results in
everything after the comment start to be removed (which may or may
not result in a valid selector).
}
}
}
\section{Changes in version 0.3-0}{
\subsection{MAJOR CHANGES}{
\itemize{
\item Added support for documents from the \pkg{xml2} package.
\item selectr now also does not strictly depend on the XML
package. If either the \pkg{XML} or \pkg{xml2} packages are
present (which are required for the \code{querySelector} methods
to work) then \code{querySelector} will begin to work for them.
This also enables selectr to be used for translation-only.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Improve support for nth-*(an+b) selectors. Ported from
cssselect.
}
}
}
\section{Changes in version 0.2-3}{
\subsection{MINOR CHANGES}{
\itemize{
\item Code cleanup contributed by Kun Ren (#1).
\item Updated DESCRIPTION to include URL and BugReports fields.
Also update email address.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Fix behaviour for nth-*(an+b) pseudo-class selectors for
negative a's. Contributed to cssselect by Paul Tremberth,
ported to R.
\item Escape delimiting characters to support new version of the
stringr package. Probably should have been done in the first place.
Reported by Hadley Wickham (#5).
}
}
}
\section{Changes in version 0.2-2}{
\subsection{MINOR CHANGES}{
\itemize{
\item Corrected licence to BSD 3 clause. This was the licence in
use previously, but has now been made more explicit.
\item Removed 'Enhances' field because we import functions from
\pkg{XML}. This choice is made because \pkg{XML} is a required
package, rather than an optional package that can be worked with.
This and the previous change have been made to keep up with recent
changes in R-devel.
}
}
}
\section{Changes in version 0.2-1}{
\subsection{MINOR FEATURES}{
\itemize{
\item Added a 'CITATION' file which cites a technical report on
the package.
\item \code{show()} methods are now available on internal objects,
making interactive extensibility and bug-fixing easier. This is
simply wrapping the \code{repr()} methods (mirroring the Python
source) that the same objects have.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Use the session character encoding to determine whether to
run unicode tests. Tests break in non-unicode sessions otherwise.
}
}
}
\section{Changes in version 0.2-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Introduced new functions \code{querySelectorNS()} and
\code{querySelectorAllNS()} to ease the use of namespaces within a
document. Previously this would have required knowledge of XPath.
}
}
\subsection{BUG FIXES}{
\itemize{
\item Fix meaning of \code{:empty}, whitespace is not empty.
\item Use \code{lang()} for XML documents with the \code{:lang()}
CSS selector.
\item \code{|ident} no longer produces a parsing error, but is now
equivalent to just 'ident'.
}
}
}
\section{Changes in version 0.1-1}{
\subsection{BUG FIXES}{
\itemize{
\item Now testing unicode only in non-Windows platforms on package
check. Output should still be consistent, just depends on the
current charset being unicode.
}
}
}
\section{Changes in version 0.1-0}{
\subsection{NEW FEATURES}{
\itemize{
\item Initial port of the Python 'cssselect' package. Code is very
literally ported, including the test suite.
\item Wrapped translation functionality into a single function,
\code{css_to_xpath()}.
\item Created two convenience functions, \code{querySelector()} and
\code{querySelectorAll()}. These mirror the behaviour of the same
functions present in a web browser. \code{querySelector()} returns a
node, while \code{querySelectorAll()} returns a list of nodes.
}
}
}
|
