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| author | wl <wl> | 2011-11-14 14:37:00 +0000 |
|---|---|---|
| committer | wl <wl> | 2011-11-14 14:37:00 +0000 |
| commit | 563ba6352566b49418f4bd2967647f9eabe36777 (patch) | |
| tree | b15c6d361445329b2134a4d168dac5daa944344a | |
| parent | 2530cbd884cc91c5644150394899873380ac1e40 (diff) | |
| download | groff-563ba6352566b49418f4bd2967647f9eabe36777.tar.gz | |
* doc/groff.texinfo: Improve doc for calling undefined identifiers.
| -rw-r--r-- | ChangeLog | 4 | ||||
| -rw-r--r-- | doc/groff.texinfo | 16 |
2 files changed, 20 insertions, 0 deletions
@@ -1,5 +1,9 @@ 2011-11-14 Werner LEMBERG <wl@gnu.org> + * doc/groff.texinfo: Improve doc for calling undefined identifiers. + +2011-11-14 Werner LEMBERG <wl@gnu.org> + * src/preproc/tbl/tbl.man: Improve documentation of `_' and friends. 2011-10-31 Werner LEMBERG <wl@gnu.org> diff --git a/doc/groff.texinfo b/doc/groff.texinfo index 1add8b5a..d6428961 100644 --- a/doc/groff.texinfo +++ b/doc/groff.texinfo @@ -6018,6 +6018,10 @@ details of formatting parameters. Define or set registers using the @code{nr} request or the @code{\R} escape. +Although the following requests and escapes can be used to create +registers, simply using an undefined register will cause it to be +set to zero. + @DefreqList {nr, ident value} @DefescListEnd {\\R, ', ident value, '} Set number register @var{ident} to @var{value}. If @var{ident} doesn't @@ -10521,6 +10525,10 @@ with a default scale indicator of @samp{z}. convenience (i.e.@: there are no built-in strings exept @code{.T}, but even this is a read-write string variable). +Although the following requests can be used to create strings, +simply using an undefined string will cause it to be defined as empty. +@xref{Identifiers}. + @DefreqList {ds, name [@Var{string}]} @DefreqItem {ds1, name [@Var{string}]} @DefescItem {\\*, , n, } @@ -11243,6 +11251,10 @@ A @dfn{macro} is a collection of text and embedded commands which can be invoked multiple times. Use macros to define common operations. @xref{Strings}, for a (limited) alternative syntax to call macros. +Although the following requests can be used to create macros, +simply using an undefined macro will cause it to be defined as empty. +@xref{Identifiers}. + @DefreqList {de, name [@Var{end}]} @DefreqItem {de1, name [@Var{end}]} @DefreqItem {dei, name [@Var{end}]} @@ -12728,6 +12740,10 @@ For orthogonality it is said that @code{gtroff} is in the @dfn{top-level diversion} if no diversion is active (i.e., the data is diverted to the output device). +Although the following requests can be used to create diversions, +simply using an undefined diversion will cause it to be defined as empty. +@xref{Identifiers}. + @DefreqList {di, macro} @DefreqListEnd {da, macro} @cindex beginning diversion (@code{di}) |