227 lines
9.5 KiB
Plaintext
227 lines
9.5 KiB
Plaintext
YUI Compressor 2.4.2, 2008-11-10
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--------------------------------
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+ Preserved comments shouldn't prevent obfuscation (Thanks to Matjaz Lipus)
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YUI Compressor 2.4.1, 2008-10-28
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--------------------------------
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+ Use preferentially lower case letters for obfuscated variable names.
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Since JavaScript keywords use lower case letters most often, this
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improves the efficiency of any compression algorithm (gzipping)
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used after minification.
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+ Don't append a semi-colon at the end of a JavaScript file when the
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last token is a special comment.
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YUI Compressor 2.4, 2008-10-21
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------------------------------
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+ Allowed the YUI Compressor (which uses a modified version of Rhino)
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to work alongside the original (unmodified) rhino library by using
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a custom class loader.
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+ Added all that's necessary to build the YUI Compressor to the
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downloable package.
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+ Fixed unnecessary white space after return / typeof when possible.
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YUI Compressor 2.3.6, 2008-07-10
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--------------------------------
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+ Fixed a few minor bugs with the CSS compressor
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+ Changed packaging. The original Rhino library, which is used to build the
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YUI Compressor, is not part of the downloadable archive. Too many people
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put it in their classpath, generating a lot of invalid bugs.
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YUI Compressor 2.3.5, 2008-02-08
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--------------------------------
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+ Added a warning when more than one 'var' statement is used in a single scope.
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Automatic coalescence is extremely complicated, and would be unsafe if not
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done properly.
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YUI Compressor 2.3.4, 2008-02-07
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--------------------------------
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+ Expanded the list of reserved words used by isValidIdentifier()
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YUI Compressor 2.3.3, 2008-02-04
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--------------------------------
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+ C-style comments starting with /*! are preserved. This is especially
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useful with comments containing copyright/license information.
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YUI Compressor 2.3.2, 2008-02-01
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--------------------------------
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+ Compressing an empty JS file throws an error [SourceForge bug #1884207]
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+ When a string is the first token in a function body, it was removed from
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the compressed file [SourceForge bug #1884314]
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YUI Compressor 2.3.1, 2008-01-30
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--------------------------------
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+ Added test against list of reserved words in method isValidIdentifier.
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YUI Compressor 2.3, 2008-01-28
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------------------------------
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+ Always output a ';' at the end of a minified JavaScript file. This allows
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the concatenating of several minified files without the fear of introducing
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a syntax error.
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+ Removed all System.exit() statements. Throw exceptions instead. This is
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especially useful when running the compressor from within a J2EE container.
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[SourceForge bug #1834750]
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+ Transform obj["foo"] into obj.foo whenever possible, saving 3 bytes.
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+ Transform 'foo': ... into foo: ... whenever possible, saving 2 bytes.
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+ Added support for multi-line string literals [SourceForge bug #1871453]
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+ Added support for unescaped slashes inside character classes in regexp.
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+ Minor performance improvements.
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+ Preserve the escaping for an octal representation of a character in string
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literals [SourceForge bug #1844894]
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var a = '\001';
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+ CSS: Preserve comments that hide CSS rules from IE Mac:
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/* Hides from IE-mac \*/
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...
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/* End hide from IE-mac */
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+ CSS: Added support for box model hack [SourceForge bug #1862107]
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div.content {
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width:400px;
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voice-family: "\"}\"";
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voice-family:inherit;
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width:300px;
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}
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YUI Compressor 2.2.5, 2007-10-09
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--------------------------------
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+ Remove line terminator after escape in string literals.
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YUI Compressor 2.2.4, 2007-10-01
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--------------------------------
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+ Fixed the way quote characters are counted in string literals
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[SourceForge bug #1804576]
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+ Do not use a regular expression using non-greedy matching to remove CSS
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comments (if the comment is more than 800 characters long or so, a stack
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overflow exception gets thrown) Instead, use good old parsing...
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+ Fix unnecessary quote escaping in string literals.
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YUI Compressor 2.2.3, 2007-09-28
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--------------------------------
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+ Transform </script into <\/script instead of replacing all </ into <\/.
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+ Fixed bug related to the shortening of hexadecimal color codes (the string
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"1px solid #aabbcc" became "1px solid#abc", missing a required white space)
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+ Added --preserve-strings option to specify that concatenated string literals
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should never be merged.
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+ Do not convert \uXXXX and \xXX escape sequences to their unicode equivalent.
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YUI Compressor 2.2.2, 2007-09-27
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--------------------------------
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+ Fixed regression related to the optimization of the amount of escaping
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in string literals and the concatenation of string literals.
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+ Modified the Rhino tokenizer to handle JScript conditional comments
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natively (instead of hacking around the fact that Rhino is not keeping
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track of comments)
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+ Transform </ into <\/ in string literals. This is especially useful if the
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code is written to a script block in an HTML document. This renders the old
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hack '<scr'+'ipt ...><'+'/script>' completely useless.
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+ When converting decimal rgb color values to hexadecimal color values,
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prepend a '0' if the value is less than 16. Otherwise, rgb(0,124,114)
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for instance becomes #07c72, which is incorrect.
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+ In CSS files, do not change color names into their corresponding color
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codes (and vice-versa) due to the high potential of introducing bugs
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(rolled back from 2.2.1)
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YUI Compressor 2.2.1, 2007-09-25
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--------------------------------
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+ Optimize quote escaping in JavaScript string literals by using the best quote
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character (' or " depending on the occurrence of this character in the string)
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+ Fixed minor bug in the CSS compressor. Colors should not be shortened in
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filter: chroma(color="#FFFFFF");
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Otherwise, it makes the filter break in Internet Explorer.
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+ In CSS files, change color names into their corresponding color codes
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(and vice-versa) if that change yields any savings.
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YUI Compressor 2.2, 2007-09-18
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------------------------------
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+ Don't obfuscate function argument named $super if it is the first function
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argument listed. This is to support Prototype 1.6's heretic implementation.
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+ Added support for stdin/stdout (see README for more info)
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+ Shorten colors from rgb(51,102,153) to #336699 in CSS files.
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+ Shorten values from 0.8em to .8em in CSS files.
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+ Added support for Internet Explorer's conditional comments in JavaScript
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files. Note that the presence of a conditional comment inside a function
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(i.e. not in the global scope) will reduce the level of compression for the
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same reason the use of 'eval' or 'with' reduces the level of compression
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(conditional comments, which do not get parsed, may refer to local variables,
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which get obfuscated) In any case, the use of Internet Explorer's conditional
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comment is to be avoided.
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YUI Compressor 2.1.2, 2007-08-31
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--------------------------------
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+ Added --preserve-semi option
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+ Modified --line-break option
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YUI Compressor 2.1.1, 2007-08-30
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--------------------------------
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+ Fixed missing space in CSS background:url('foo.png')no-repeat
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causing a background not to appear on Internet Explorer.
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YUI Compressor 2.1, 2007-08-29
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------------------------------
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+ Pass the --line-break option to the CSS compressor.
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+ Allow the output file to overwrite the input file (with version 2.0,
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in this case, the output file was always empty)
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+ Remove spaces before and after '(' and ')' as in background:url('xxx');
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+ Merge (if possible) string literals that are appended in JavaScript files.
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This not only makes the code smaller, it makes the code faster,
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but allows you to maintain some readability in your source code.
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+ Handle constructs such as a + ++ b or a + + "1" (in which case the
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space between the operators must be kept!) and other similar cases...
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+ Pass ErrorReporter instance to the constructor of class JavaScriptCompressor
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(as suggested by David Bernard for his integration of the YUI Compressor
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as a maven plugin)
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YUI Compressor 2.0, 2007-08-27
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------------------------------
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+ Switched from Rhino 1.6R6 to Rhino 1.6R7
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+ Integrated Isaac Schlueter's CSS compressor.
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+ Refactored code to make it easier to use the compressor from a servlet
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environment or another Java app (no need to pass in file names anymore)
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+ Output a white-space character after 'throw' only when necessary.
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+ Output a white-space character after 'break' and 'continue' when followed
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by a label.
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YUI Compressor 1.1, 2007-08-20
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------------------------------
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+ Java source now in package com.yahoo.platform.yui.compressor
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+ Added --line-break option that adds a line feed character after each
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semi-colon character (may help debugging with the MS Script debugger)
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+ Added support for missing JavaScript features (get, set, const)
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+ Do not show the entire stack trace when the input file cannot be found.
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+ Removed the randomization of obfuscated symbols. When compressed code is
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checked in CVS, unchanged files would otherwise end up being versioned.
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+ Added web-based front-end to the YUI Compressor as part of the dist package.
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+ Added a public entry point that makes the YUI Compressor easy to integrate
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with an already existing Java application.
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+ Simplified code by using the same parsing routines used to build the symbol
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tree while looking for undeclared symbols.
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+ Count how many times each identifier is used, and display a warning when an
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identifier seems to be unused (code cannot safely be removed automatically)
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+ Remove ';' when followed by a '}'. This yields an additional ~1.5% savings
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on yahoo-dom-event.js compared to the JSMin version.
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+ Output a white-space character after 'return' and 'case' only when necessary.
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