diff options
Diffstat (limited to 'doc/groff.texinfo')
| -rw-r--r-- | doc/groff.texinfo | 51 |
1 files changed, 39 insertions, 12 deletions
diff --git a/doc/groff.texinfo b/doc/groff.texinfo index 731935cd..4fb9d015 100644 --- a/doc/groff.texinfo +++ b/doc/groff.texinfo @@ -2311,6 +2311,8 @@ There are several ways to cause a break in @code{gtroff}. A blank line will not only cause a break, but it will also cause a one line vertical space (effectively a blank line) to be output. +@cindex fill mode +@cindex mode, fill A line which begins with a space will cause a break and the space will be output at the beginning of the next line. Note that this space isn't adjusted, even in fill mode. @@ -3300,8 +3302,10 @@ Decimal numbers. This is the default format: 1, 2, 3,@w{ }@dots{} Decimal numbers with as many digits as specified. So, @samp{00} would result in printing numbers as 01, 02, 03,@w{ }@dots{} -In fact, any digit instead of zeros will do; @code{gtroff} only counts -how many digits are specified. +In fact, any digit instead of zero will do; @code{gtroff} only counts +how many digits are specified. As a consequence, @code{af}'s default +format @samp{1} could be specified as @samp{0} also (and exactly this is +returned by the @code{\g} escape). @item I @cindex roman numerals @@ -3537,12 +3541,16 @@ Initially, @code{gtroff} will fill and adjust text to both margins. Filling can be disabled via the @code{nf} request and re-enabled with the @code{fi} request. +@cindex fill mode +@cindex mode, fill @Deffn{Request, fi, } Activate fill mode (which is the default). This request implicitly enables adjusting; it will also cause a break in the text currently being filled. The number register @code{.u} is set to@w{ }1. @end_Deffn +@cindex no-fill mode +@cindex mode, no-fill @Deffn{Request, nf, } Activate no-fill mode. Input lines are output as-is, retaining line breaks. The current line length will be ignored. This command @@ -3551,7 +3559,13 @@ register @code{.u} will be set to@w{ }0. @end_Deffn @Deffn{Request, ad, [@var{mode}]} -Enable adjusting. @var{mode} can have one of the following values: + +Set adjusting mode. + +Activation and deactivation of adjusting will be implicitly done with +calls to the @code{fi} resp.@: @code{nf} requests. + +@var{mode} can have one of the following values: @table @code @item l @@ -3635,6 +3649,8 @@ units as one twelfth of the space width parameter for the current font. Initially both the @var{word_space_size} and @var{sentence_space_size} are@w{ }12. +@cindex fill mode +@cindex mode, fill If two arguments are given to the @code{ss} request, the second argument sets the sentence space size. If the second argument is not given, @var{sentence_space_size} will be the same as @var{word_space_size}. @@ -3664,7 +3680,7 @@ text it affects. This request causes a break. With no arguments, @code{ce} will center the next line of text. @var{nnn} is a number indicating the number of lines to be centered. If -the argument is zero, centering is disabled. +the argument is zero or negative, centering is disabled. A common idiom is to turn on centering for a large number of lines, and to turn off centering after text to be centered. This is useful for any @@ -3759,15 +3775,22 @@ register. Also the number of immediately preceding consecutive hyphenated lines are available in the number register @samp{.hlc}. @end_Deffn -@Deffn{Request, hw, word} -Define how @var{word} is to be hyphenated. @var{word} must be given -with hyphens at the hyphenation points. For example: +@Deffn{Request, hw, word1 word2 @dots{}} +Define how @var{word1}, @var{word2}, etc.@: are to be hyphenated. The +words must be given with hyphens at the hyphenation points. For +example: @example .hw in-sa-lub-rious @end example -This request can be used more than once. +@noindent +Besides the space character, any character which hyphenation code value +is zero can be used to separate the arguments of @code{hw} (see the +documentation for the @code{hcode} request below for more information). +In addition, this request can be used more than once. + +It will cause an error if there is no current hyphenation language. In old versions of @code{troff} there was a limited amount of space to store such information; fortunately, with @code{gtroff}, this is no @@ -3792,11 +3815,11 @@ document, use the @code{hw} request. Change the hyphenation character to @var{char}. This character will then work the same as the @code{\%} escape, and, thus, no longer appear in the output. Without an argument, @code{hc} will reset the -hyphenation character to @code{\%} only. +hyphenation character to be @code{\%} only. @end_Deffn @cindex hyphenation patterns -@cindex pattern for hyphenation +@cindex patterns for hyphenation @Deffn{Request, hpf, pattern_file} Read in a file of hyphenation patterns. This file will be searched for in the same way as @file{tmac.@var{name}} is searched for if the @@ -3820,6 +3843,8 @@ set by the @code{hla} request. The @code{hpf} request is usually invoked by the @file{troffrc} or @file{troffrc-end} file; by default, @file{troffrc} loads hyphenation patterns for American English (in file @file{hyphen.us}). + +It will cause an error if there is no current hyphenation language. @end_Deffn @cindex hyphenation code @@ -3828,7 +3853,7 @@ invoked by the @file{troffrc} or @file{troffrc-end} file; by default, Sets the hyphenation code of character @var{c1} to @var{code1}, that of @var{c2} to @var{code2}, etc. A hyphenation code must be a single input character (not a special character) other than a digit or a space. -Initially each lower-case letter (@samp{a}-@samp{z})has a hyphenation +Initially each lower-case letter (@samp{a}-@samp{z}) has a hyphenation code, which is itself, and each upper-case letter (@samp{A}-@samp{Z}) has a hyphenation code which is the lower-case version of itself. @end_Deffn @@ -5706,7 +5731,7 @@ name. This would be called as @example -.vl $Id: groff.texinfo,v 1.33 2000/05/11 04:59:07 wlemb Exp $ +.vl $Id: groff.texinfo,v 1.34 2000/05/12 23:27:48 wlemb Exp $ @end example @xref{Request Arguments}. @@ -6843,6 +6868,8 @@ Invalid numeric expressions. This is enabled by default. @item break @itemx 4 +@cindex fill mode +@cindex mode, fill In fill mode, lines which could not be broken so that their length was less than the line length. This is enabled by default. |