File Release Notes and Changelog
Release Name: 060813
Notes:
Changes: g sequence has been output. * [nt]roff: The ".index" request has been added to determine the position of a string within a string or macro. * [nt]roff: Floating-point registers have been introduced; they can be created and modified with the ".nrf" request and are otherwise like standard integer number registers, with which they share a common name space. * [nt]roff: The ".if f expr" condition has been introduced to evaluate an expression with floating-point computation. * [nt]roff: Exponential notation, as in "1e+10", is now supported in numerical expressions. * [nt]roff: Debugging requests for watching macros, strings, and number registers have been added. * [nt]roff: The ".errprint" request has been added to write custom strings in the same format as internal error messages. * [nt]roff: The ".cp" request has been added to control compatibility with groff. * [nt]roff: The "-mg" macro package has been added for improved support of groff documents, preprocessors, and macro sets. * [nt]roff: The ".while", ".break", and ".continue" requests have been added as another method to process input repeatedly. * [nt]roff: Space characters inside parentheses in numerical expressions are now permissible, i.e. they are discarded and do not terminate the expression. * [nt]roff: The ".char", ".fchar", and ".rchar" requests have been added to transform a single input character to multiple output characters. * [nt]roff: The ".ecs" and ".ecr" requests have been added to save and restore the escape character. * [nt]roff: The ".shc" request has been added to set the soft hyphen character. * [nt]roff: The ".hcode" request has been added to specify character mappings for hyphenation purposes. * [nt]roff: The sets of sentence-ending and transparent characters are now configurable with the ".sentchar" and ".transchar" requests. * [nt]roff: The set of optional line break characters (normally hyphen and em dash) is now configurable with the ".breakchar" request. * [nt]roff: The ".nhychar" request defines a set of hyphenation- inhibiting characters (as hyphen and em dash with traditional troff hyphenation). * troff: The second argument to the ".ss" request now actually sets the size of the sentence-end space instead of just switching it on or off. * [nt]roff: The ".unformat" and ".asciify" requests have been added to remove the effects of adjustment, and font and point size information, respectively, from a diversion. * [nt]roff: The "\Z'string'" escape sequence (print string and restore the position afterwards) has been introduced. * [nt]roff: The ".als" request has been added to create an alias name for a request, macro, or string. * [nt]roff: The ".aln" request has been added to create an alias name for a number register. * [nt]roff: The ".rnn" request has been added to rename a number register. * [nt]roff: The ".box" request has been added; it is like ".di" but saves and restores a previous partially filled line. * [nt]roff: The ".spacewidth" request has been introduced to default to the width of the space character as obtained from the font metrics file. * [nt]roff: The ".rj" request (right-align next input lines) has been added. The ".rj" number register that holds the number of remaining lines to be right-adjusted has been added. * [nt]roff: The ".ce" number register that holds the number of remaining lines to be centered with the ".ce" request has been added. * troff: The "\Yx", "\Y(xx", or "\Y[xxx]" escape sequence has been added to output the contents of the string or macro x, xx, or xxx, respectively, as a device control function. * [nt]roff: The "\$0" escape sequence has been added to refer to the name of the current macro or string. * [nt]roff: The "(c;e)" numerical expression function has been added to evaluate "e" using "c" as default scale indicator. * [nt]roff: The "M" (Em/100), "s" (= "u"), and "z" (= "p") scale indicators have been added. * [nt]roff: The ".ta T Nt Mu" syntax to set tab stops repeatedly is now supported. * [nt]roff: The "\n(.S" and "\n[.tabs]" registers have been added to save and restore tab stops. * [nt]roff: The "\n[.ev]" number register has been added as a method to determine the name of the current environment. * troff: The "\n[rst]" and "\n[rsb]" registers are set by the width function to the highest and lowest extent of the bounding box of any character. This currently only works for Type 1 and TrueType fonts. * troff: The "\n[.cht]" and "\n[.cdp]" registers are set to the highest and lowest extent of the bounding box of the previous character. This currently only works for Type 1 and TrueType fonts. * [nt]roff: In extension level 1, long string "\*[xxx]", register "\n[xxx]", and font "\f[xxx]" names are no longer recognized unless they are on a line beginning with the ".do" request. * [nt]roff: The "\n[.ps]" number register, which holds the current font size in device units, has been added. * [nt]roff: The "\E" escape sequence has been fixed; it does not resolve to a printable but to an effective escape character now. * [nt]roff: The "\)" escape sequence (like "\&" but transparent for sentence ending) has been added. * [nt]roff: Static limits on word and line size have been eliminated. * [nt]roff: The "\{", "\}", "\&", "\%", "\c", and "\(space)" escape sequences terminate two-character request names now. * [nt]roff: The ".tm" and ".write" commands now discard formatted motion sequences. * troff: The ".psbb" request now reads a "%%HiResBoundingBox" DSC comment in preference to "%%BoundingBox"; the registers it assigns to are now floating-point registers. * troff: The ".psbb" request now properly supports the "(atend)" syntax in PostScript DSC input files. * nroff: The ".psbb" request has been made a no-op since nroff cannot otherwise handle EPS documents anyway. * [nt]roff: The "right-brace" warning category has been added. * [nt]roff: Calls of ".vs" that result in negative numbers are now ignored. * [nt]roff: The width function "\w" now takes pairwise kerning into account. * [nt]roff: The ".return" request has been fixed not to ignore the next line of input when followed by text on the same line. * [nt]roff: The second argument of the ".ss" request now also applies to sequences of space characters that follow a sentence end character. * [nt]roff: The "\k[name]" escape sequence has been fixed to work if "name" has not been previously been used. * [nt]roff: The "\(dq" character has been introduced as an alternate name for the ASCII double quote character. * dpost: Character height and slant changes now only apply to the current font as documented. * tbl: When ending macros in generated code, ".00" is now used instead of "..". This allows the use of ".ig" and similar requests within "T{" etc. without interference. * pic: Accept "{lower|upper} {left|right} of" as aliases for ".nw", ".sw", ".ne", and ".se". * pic: Continued newlines in expressions like "center \<newline>of" are now accepted.
