=================================================================== RCS file: /cvs/mandoc/mdoc.7,v retrieving revision 1.22 retrieving revision 1.44 diff -u -p -r1.22 -r1.44 --- mandoc/mdoc.7 2009/04/12 19:45:26 1.22 +++ mandoc/mdoc.7 2009/07/17 12:08:08 1.44 @@ -1,6 +1,6 @@ -.\" $Id: mdoc.7,v 1.22 2009/04/12 19:45:26 kristaps Exp $ +.\" $Id: mdoc.7,v 1.44 2009/07/17 12:08:08 kristaps Exp $ .\" -.\" Copyright (c) 2009 Kristaps Dzonsons +.\" Copyright (c) 2009 Kristaps Dzonsons .\" .\" Permission to use, copy, modify, and distribute this software for any .\" purpose with or without fee is hereby granted, provided that the above @@ -14,25 +14,28 @@ .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: April 12 2009 $ +.Dd $Mdocdate: July 17 2009 $ .Dt MDOC 7 .Os -.\" SECTION +.\" SECTION--------------------------------------------- .Sh NAME .Nm mdoc .Nd mdoc language reference -.\" SECTION +.\" SECTION--------------------------------------------- .Sh DESCRIPTION The .Nm mdoc language is used to format .Bx .Ux -manuals. In this reference document, we describe the syntax, ontology -and structure of the -.Nm -language. -.\" PARAGRAPH +manuals. In this reference document, we describe its syntax, structure, +and usage. Our reference implementation is +.Xr mandoc 1 . +The +.Sx COMPATIBILITY +section describes compatibility with +.Xr groff 1 . +.\" PARAGRAPH------------ .Pp An .Nm @@ -41,41 +44,30 @@ character .Sq \. are parsed for macros. Other lines are interpreted within the scope of prior macros: -.Bd -literal -offset XXX +.Bd -literal -offset indent \&.Sh Macro lines change control state. Other lines are interpreted within the current state. .Ed -.\" SECTION +.\" SECTION--------------------------------------------- .Sh INPUT ENCODING .Nm documents may contain only graphable 7-bit ASCII characters, the space -character -.Sq \ , -and, in certain circumstances, the tab character -.Sq \et . -All manuals must have -.Sq \en +character, and, in certain circumstances, the tab character. All +manuals must have +.Ux line termination. -.Pp -The only time a blank line is acceptable is within -the context of -.Sq \&.Bd \-literal -or -.Sq \&.Bd \-unfilled . -.Pp -Tab characters -.Pq \et -are only acceptable when delimiting -.Sq \&.Bl \-column -and in -.Sq \&.Bd \-literal -or -.Sq \&.Bd \-unfilled -contexts. -.\" SUB-SECTION +.\" SUB-SECTION---------------------- +.Ss Comments +Text following a +.Sq \e" , +whether in a macro or free-form text line, is ignored to the end of +line. A macro line with only a control character and comment escape, +.Sq \&.\e" , +is also ignored. +.\" SUB-SECTION---------------------- .Ss Reserved Characters Within a macro line, the following characters are reserved: -.Bl -tag -width 12n -offset XXXX -compact +.Bl -tag -width Ds -offset indent -compact .It \&. .Pq period .It \&, @@ -96,18 +88,21 @@ Within a macro line, the following characters are rese .Pq question .It \&! .Pq exclamation +.It \&| +.Pq vertical bar .El -.\" PARAGRAPH +.\" PARAGRAPH------------ .Pp Use of reserved characters is described in -.Sx Closure . -For general non-reserved use, characters must either be escaped with a -non-breaking space +.Sx MACRO SYNTAX . +For general use in macro lines, these characters must either be escaped +with a non-breaking space .Pq Sq \e& -or, if applicable, an appropriate escape-sequence used. -.\" SUB-SECTION +or, if applicable, an appropriate escape sequence used. +.\" SUB-SECTION---------------------- .Ss Special Characters -Special character sequences begin with the escape character +Special characters may occur in both macro and free-form lines. +Sequences begin with the escape character .Sq \e followed by either an open-parenthesis .Sq \&( @@ -115,378 +110,356 @@ for two-character sequences; an open-bracket .Sq \&[ for n-character sequences (terminated at a close-bracket .Sq \&] ) ; -or a single one-character sequence. +or a single one-character sequence. See +.Xr mandoc_char 1 +for a complete list. Examples include +.Sq \e(em +.Pq em-dash +and +.Sq \ee +.Pq back-slash . +.\" PARAGRAPH------------ .Pp -Characters may alternatively be escaped by a slash-asterisk, +An alternative escape sequence is +the slash-asterisk, .Sq \e* , -with the same combinations as described above. This form is deprecated. -.\" SECTION -.Sh STRUCTURE -Macros are classified in an ontology described by their scope rules. -Some macros are allowed to deviate from their classifications to -preserve backward-compatibility with old macro combinations still found -in the manual corpus. These are specifically noted on a per-macro -basis. -.\" SUB-SECTION -.Ss Scope -.Bl -inset -.\" LIST-ITEM -.It Em Block -macros enclose other block macros, in-line macros or text, and -may span multiple lines. -.Bl -inset -offset XXXX -.\" LIST-ITEM -.It Em Full-block -macros always span multiple lines. They consist of zero or -more -.Qq heads , -subsequent macros or text on the same line following invocation; an -optional -.Qq body , -which spans subsequent lines of text or macros; and an optional -.Qq tail , -macros or text on the same line following closure. -.\" LIST-ITEM -.It Em Partial-block -macros may span multiple lines. They consists of a optional -.Qq head , -text immediately following invocation; always a -.Qq body , -text or macros following the head on the same and subsequent lines; and -optionally a -.Qq tail , -text immediately following closure. -.\" LIST-ITEM -.It Em In-line -macros may only enclose text and span at most a single line. -.El -.El -.\" SUB-SECTION -.Ss Closure -Closure of a macro's scope depends first on its classification, then -on whether it's parsable. In this table, -.Sq BFE -refers to block full-explicit and so on. -.\" PARAGRAPH +but this method is discouraged for compatibility reasons. +.\" PARAGRAPH------------ .Pp -.Bl -tag -width 12n -offset XXXX -compact -.It BPE , BFE -corresponding explicit closure macro -.It BFI -end-of-file or a corresponding implicit closure macro -.It BPI -end-of-line (body may be closed by >0 space-separated -.Sx Reserved Characters , -although block scope will still be open) -.It INL -end-of-line -.El -.\" PARAGRAPH +Terms may +also be text-decorated using the +.Sq \ef +escape followed by an indicator: B (bold), I, (italic), or P and R +(Roman, or reset). This form is not recommended. +.\" SUB-SECTION---------------------- +.Ss Whitespace +In general, consecutive blocks of whitespace are pruned from input. +These are later re-added, when applicable, by +.Xr mandoc 1 . +.\" PARAGRAPH------------ .Pp -If a macro (block or in-line) is parsable, it may also be closed out by -one of the following scenarios (unless specifically noted otherwise): -.\" PARAGRAPH +Blank lines are permitted within +.Sq \&Bd \-literal +or +.Sq \&Bd \-unfilled +contexts. Tab characters are only acceptable when delimiting +.Sq \&Bl \-column +and in +.Sq \&Bd \-literal +or +.Sq \&Bd \-unfilled +contexts. +.\" SECTION--------------------------------------------- +.Sh MANUAL STRUCTURE +Each +.Nm +document must begin with a document prologue, containing, in order, +.Sq \&Dd , +.Sq \&Dt , +and +.Sq \&Os +(using this manual as an example): +.Bd -literal -offset indent +\&.Dd $\&Mdocdate$ +\&.Dt mdoc 7 +\&.Os +\&.Sh NAME +\&.Nm mdoc +\&.Nd mdoc language reference +.Ed .Pp -.Bl -dash -offset XXXX -compact -.It -a sequence of >0 space-separated -.Sx Reserved Characters , -.It -another macro, -.It -end-of-line, or -.It -completion of a set number of arguments. -.El -.\" PARAGRAPH +Following these, the document body must begin with the NAME section +containing at least one +.Sq \&Nm +followed by +.Sq \&Nd . +.\" PARAGRAPH------------ .Pp -If >0 space-separated -.Sx Reserved Characters -are followed by non-reserved characters, the behaviour differs per -macro. In general, scope of the macro is closed and re-opened: -subsequent tokens are interpreted as if the scope had just been opened. -In other circumstances, scope is simply closed out. -.\" SECTION -.Sh SYNTAX -Macros are two or three characters in length. The syntax of macro -invocation depends on its classification. -.Qq \-arg -refers to the macro arguments (which may contain zero or more values). -In these illustrations, -.Sq \&.Yo -opens the scope of a macro, and if specified, -.Sq \&.Yc -closes it out (closure may be implicit at end-of-line or end-of-file). -.\" PARAGRAPH +Subsequent SYNOPSIS and DESCRIPTION sections are strongly encouraged, +but non-compulsory. +.\" SECTION--------------------------------------------- +.Sh MACRO SYNTAX +Every line beginning with the control character +.Sq \. +is processed for macros, two- or three-character semantic annotations. +.\" PARAGRAPH------------ .Pp -Block full-explicit (may contain head, body, tail). -.Bd -literal -offset XXXX -\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead...\(rB -\(lBbody...\(rB -\&.Yc \(lBtail...\(rB -.Ed -.\" PARAGRAPH +The syntax of macro depends on its classification. In this section, +.Sq \-arg +refers to macro arguments, which may be followed by zero or more +.Sq parm +parameters; +.Sq \&Yo +opens the scope of a macro; and if specified, +.Sq \&Yc +closes it out. +.\" PARAGRAPH------------ .Pp -Block full-implicit (may contain zero or more heads, body, no tail). -.Bd -literal -offset XXXX -\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB +The +.Em Callable +column indicates that the macro may be called subsequent to the initial +line-macro. The +.Qq Parsable +column indicates whether the macro may be followed by further +(ostensibly callable) macros. The +.Em Scope +column, if applicable, describes closure rules. +.\" SUB-SECTION---------------------- +.Ss Block full-explicit +Multi-line scope closed by an explicit closing macro. All macros +contains bodies; only +.Pq Sq \&Bf +contains a head. +.Bd -literal -offset indent +\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \(lBbody...\(rB \&.Yc .Ed -.\" PARAGRAPH +.\" PARAGRAPH------------ .Pp -Block partial-explicit (may contain head, multi-line body, tail). -.Bd -literal -offset XXXX -\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead...\(rB -\(lBbody...\(rB -\&.Yc \(lBtail...\(rB - -\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBhead...\(rB \ -\(lBbody...\(rB \&Yc \(lBtail...\(rB -.Ed -.\" PARAGRAPH -.Pp -Block partial-implicit (no head, body, no tail). Note that the body -section may be followed by zero or more -.Sx Reserved Words . -These are in the block scope, but not in the body scope. -.Bd -literal -offset XXXX -\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBreserved...\(rB -.Ed -.\" PARAGRAPH -.Pp -In-lines have \(>=0 scoped arguments. -.Bd -literal -offset XXX -\&.Yy \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB - -\&.Yy \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN -.Ed -.\" -.Sh MACROS -This section contains a complete list of all -.Nm -macros, arranged ontologically. A -.Qq callable -macro is invoked subsequent to the initial macro-line macro. A -.Qq parsable -macro may be followed by further (ostensibly callable) macros. -.\" SUB-SECTION +.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXX" +.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope +.It \&Bd Ta \&No Ta \&No Ta closed by \&Ed +.It \&Bf Ta \&No Ta \&No Ta closed by \&Ef +.It \&Bk Ta \&No Ta \&No Ta closed by \&Ek +.It \&Bl Ta \&No Ta \&No Ta closed by \&El +.It \&Ed Ta \&No Ta \&No Ta opened by \&Bd +.It \&Ef Ta \&No Ta \&No Ta opened by \&Bf +.It \&Ek Ta \&No Ta \&No Ta opened by \&Bk +.It \&El Ta \&No Ta \&No Ta opened by \&Bl +.El +.\" SUB-SECTION---------------------- .Ss Block full-implicit -The head of these macros follows invocation; the body is the content of -subsequent lines prior to closure. None of these macros have tails; -some +Multi-line scope closed by end-of-file or implicitly by another macro. +All macros have bodies; some .Po -.Sq \&.It \-bullet , +.Sq \&It \-bullet , .Sq \-hyphen , .Sq \-dash , .Sq \-enum , .Sq \-item .Pc -don't have heads. +don't have heads, while +.Sq \&It \-column +may have multiple heads. +.Bd -literal -offset indent +\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead... \(lBTa head...\(rB\(rB +\(lBbody...\(rB +.Ed +.\" PARAGRAPH------------ .Pp -.Bl -column "MacroX" "CallableX" "ParsableX" "Closing" -compact -offset XXXX -.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Closing -.It \&.Sh Ta \&No Ta \&No Ta \&.Sh -.It \&.Ss Ta \&No Ta \&No Ta \&.Sh, \&.Ss -.It \&.It Ta \&No Ta Yes Ta \&.It, \&.El +.Bl -column -compact -offset indent "MacroX" "CallableX" "ParsableX" "closed by XXXXXXXXXXX" +.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope +.It \&It Ta \&No Ta Yes Ta closed by \&It, \&El +.It \&Nd Ta \&No Ta \&No Ta closed by \&Sh +.It \&Sh Ta \&No Ta \&No Ta closed by \&Sh +.It \&Ss Ta \&No Ta \&No Ta closed by \&Sh, \&Ss .El -.\" SUB-SECTION -.Ss Block full-explicit -None of these macros are callable or parsed. The last column indicates -the explicit scope rules. All contains bodies, some may contain heads -.Pq So \&Bf Sc . +.\" SUB-SECTION---------------------- +.Ss Block partial-explicit +Like block full-explicit, but also with single-line scope. Each +has at least a body and, in limited circumstances, a head +.Pq So \&Fo Sc , So \&Eo Sc +and/or tail +.Pq So \&Ec Sc . +.Bd -literal -offset indent +\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB +\(lBbody...\(rB +\&.Yc \(lBtail...\(rB + +\&.Yo \(lB\-arg \(lBparm...\(rB\(rB \(lBhead...\(rB \ +\(lBbody...\(rB \&Yc \(lBtail...\(rB +.Ed +.\" PARAGRAPH------------ .Pp -.Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXX" -compact -offset XXXX +.Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXXX" -compact -offset indent .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope -.It \&.Bd Ta \&No Ta \&No Ta closed by \&.Ed -.It \&.Ed Ta \&No Ta \&No Ta opened by \&.Bd -.It \&.Bl Ta \&No Ta \&No Ta closed by \&.El -.It \&.El Ta \&No Ta \&No Ta opened by \&.Bl -.It \&.Bf Ta \&No Ta \&No Ta closed by \&.Ef -.It \&.Ef Ta \&No Ta \&No Ta opened by \&.Bf -.It \&.Bk Ta \&No Ta \&No Ta closed by \&.Ek -.It \&.Ek Ta \&No Ta \&No Ta opened by \&.Bk +.It \&Ac Ta Yes Ta Yes Ta opened by \&Ao +.It \&Ao Ta Yes Ta Yes Ta closed by \&Ac +.It \&Bc Ta Yes Ta Yes Ta closed by \&Bo +.It \&Bo Ta Yes Ta Yes Ta opened by \&Bc +.It \&Brc Ta Yes Ta Yes Ta opened by \&Bro +.It \&Bro Ta Yes Ta Yes Ta closed by \&Brc +.It \&Dc Ta Yes Ta Yes Ta opened by \&Do +.It \&Do Ta Yes Ta Yes Ta closed by \&Dc +.It \&Ec Ta Yes Ta Yes Ta opened by \&Eo +.It \&Eo Ta Yes Ta Yes Ta closed by \&Ec +.It \&Fc Ta Yes Ta Yes Ta opened by \&Fo +.It \&Fo Ta \&No Ta \&No Ta closed by \&Fc +.It \&Oc Ta Yes Ta Yes Ta closed by \&Oo +.It \&Oo Ta Yes Ta Yes Ta opened by \&Oc +.It \&Pc Ta Yes Ta Yes Ta closed by \&Po +.It \&Po Ta Yes Ta Yes Ta opened by \&Pc +.It \&Qc Ta Yes Ta Yes Ta opened by \&Oo +.It \&Qo Ta Yes Ta Yes Ta closed by \&Oc +.It \&Re Ta \&No Ta \&No Ta opened by \&Rs +.It \&Rs Ta \&No Ta \&No Ta closed by \&Re +.It \&Sc Ta Yes Ta Yes Ta opened by \&So +.It \&So Ta Yes Ta Yes Ta closed by \&Sc +.It \&Xc Ta Yes Ta Yes Ta opened by \&Xo +.It \&Xo Ta Yes Ta Yes Ta closed by \&Xc .El -.\" SUB-SECTION +.\" SUB-SECTION---------------------- .Ss Block partial-implicit -All of these are callable and parsed for further macros. Their scopes -close at the invocation's end-of-line. +Like block full-implicit, but with single-line scope closed by +.Sx Reserved Characters +or end of line. +.Bd -literal -offset indent +\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBbody...\(rB \(lBres...\(rB +.Ed +.\" PARAGRAPH------------ .Pp -.Bl -column "MacroX" "CallableX" "ParsableX" -compact -offset XXXX +.Bl -column "MacroX" "CallableX" "ParsableX" -compact -offset indent .It Em Macro Ta Em Callable Ta Em Parsable -.It \&.Aq Ta Yes Ta Yes -.It \&.Op Ta Yes Ta Yes -.It \&.Bq Ta Yes Ta Yes -.It \&.Dq Ta Yes Ta Yes -.It \&.Pq Ta Yes Ta Yes -.It \&.Qq Ta Yes Ta Yes -.It \&.Sq Ta Yes Ta Yes -.It \&.Brq Ta Yes Ta Yes -.It \&.D1 Ta \&No Ta \&Yes -.It \&.Dl Ta \&No Ta Yes -.It \&.Ql Ta Yes Ta Yes +.It \&Aq Ta Yes Ta Yes +.It \&Bq Ta Yes Ta Yes +.It \&Brq Ta Yes Ta Yes +.It \&D1 Ta \&No Ta \&Yes +.It \&Dl Ta \&No Ta Yes +.It \&Dq Ta Yes Ta Yes +.It \&Op Ta Yes Ta Yes +.It \&Pq Ta Yes Ta Yes +.It \&Ql Ta Yes Ta Yes +.It \&Qq Ta Yes Ta Yes +.It \&Sq Ta Yes Ta Yes .El -.\" PARAGRAPH -.Pp -The -.Sq \&.Op -may be broken by -.Sq \&.Oc -as in the following example: -.Bd -literal -offset XXXX -\&.Oo -\&.Op Fl a Oc -.Ed -.Pp -In the above example, the scope of -.Sq \&.Op -is technically broken by -.Sq \&.Oc , -however, due to the overwhelming existence of this sequence, it's -allowed. -.\" SUB-SECTION -.Ss Block partial-explicit -Each of these contains at least a body and, in limited circumstances, a -head -.Pq So \&.Fo Sc , So \&.Eo Sc -and/or tail -.Pq So \&.Ec Sc . -.Pp -.Bl -column "MacroX" "CallableX" "ParsableX" "closed by XXXX" -compact -offset XXXX -.It Em Macro Ta Em Callable Ta Em Parsable Ta Em Scope -.It \&.Ao Ta Yes Ta Yes Ta closed by \&.Ac -.It \&.Ac Ta Yes Ta Yes Ta opened by \&.Ao -.It \&.Bc Ta Yes Ta Yes Ta closed by \&.Bo -.It \&.Bo Ta Yes Ta Yes Ta opened by \&.Bc -.It \&.Pc Ta Yes Ta Yes Ta closed by \&.Po -.It \&.Po Ta Yes Ta Yes Ta opened by \&.Pc -.It \&.Do Ta Yes Ta Yes Ta closed by \&.Dc -.It \&.Dc Ta Yes Ta Yes Ta opened by \&.Do -.It \&.Xo Ta Yes Ta Yes Ta closed by \&.Xc -.It \&.Xc Ta Yes Ta Yes Ta opened by \&.Xo -.It \&.Bro Ta Yes Ta Yes Ta closed by \&.Brc -.It \&.Brc Ta Yes Ta Yes Ta opened by \&.Bro -.It \&.Oc Ta Yes Ta Yes Ta closed by \&.Oo -.It \&.Oo Ta Yes Ta Yes Ta opened by \&.Oc -.It \&.So Ta Yes Ta Yes Ta closed by \&.Sc -.It \&.Sc Ta Yes Ta Yes Ta opened by \&.So -.It \&.Fc Ta Yes Ta Yes Ta opened by \&.Fo -.It \&.Fo Ta \&No Ta \&No Ta closed by \&.Fc -.It \&.Ec Ta Yes Ta Yes Ta opened by \&.Eo -.It \&.Eo Ta Yes Ta Yes Ta closed by \&.Ec -.It \&.Qc Ta Yes Ta Yes Ta opened by \&.Oo -.It \&.Qo Ta Yes Ta Yes Ta closed by \&.Oc -.It \&.Re Ta \&No Ta \&No Ta opened by \&.Rs -.It \&.Rs Ta \&No Ta \&No Ta closed by \&.Re -.El -.\" SUB-SECTION -.Ss In-line -In-line macros have only text children. If a number (or inequality) of +.\" SUB-SECTION---------------------- +.Ss In-line +Closed by +.Sx Reserved Characters , +end of line, fixed argument lengths, and/or subsequent macros. In-line +macros have only text children. If a number (or inequality) of arguments is .Pq n , then the macro accepts an arbitrary number of arguments. +.Bd -literal -offset indent +\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB \(lbres...\(rb + +\&.Yo \(lB\-arg \(lBval...\(rB\(rB \(lBargs...\(rB Yc... + +\&.Yo \(lB\-arg \(lBval...\(rB\(rB arg0 arg1 argN +.Ed +.\" PARAGRAPH------------ .Pp -.Bl -column "MacroX" "CallableX" "ParsableX" "Arguments" -compact -offset XXXX +.Bl -column "MacroX" "CallableX" "ParsableX" "Arguments" -compact -offset indent .It Em Macro Ta Em Callable Ta Em Parsable Ta Em Arguments -.It \&.Dd Ta \&No Ta \&No Ta >0 -.It \&.Dt Ta \&No Ta \&No Ta n -.It \&.Os Ta \&No Ta \&No Ta n -.It \&.Pp Ta \&No Ta \&No Ta 0 -.It \&.Ad Ta Yes Ta Yes Ta n -.It \&.An Ta \&No Ta Yes Ta n -.It \&.Ar Ta Yes Ta Yes Ta n -.It \&.Cd Ta Yes Ta \&No Ta >0 -.It \&.Cm Ta Yes Ta Yes Ta n -.It \&.Dv Ta Yes Ta Yes Ta n -.It \&.Er Ta Yes Ta Yes Ta >0 -.It \&.Ev Ta Yes Ta Yes Ta n -.It \&.Ex Ta \&No Ta \&No Ta 0 -.It \&.Fa Ta Yes Ta Yes Ta n -.It \&.Fd Ta \&No Ta \&No Ta >0 -.It \&.Fl Ta Yes Ta Yes Ta n -.It \&.Fn Ta Yes Ta Yes Ta >0 -.It \&.Ft Ta \&No Ta Yes Ta n -.It \&.Ic Ta Yes Ta Yes Ta >0 -.It \&.In Ta \&No Ta \&No Ta n -.It \&.Li Ta Yes Ta Yes Ta n -.It \&.Nd Ta \&No Ta \&No Ta n -.It \&.Nm Ta Yes Ta Yes Ta n -.It \&.Ot Ta \&No Ta \&No Ta n -.It \&.Pa Ta Yes Ta Yes Ta n -.It \&.Rv Ta \&No Ta \&No Ta 0 -.It \&.St Ta \&No Ta Yes Ta 1 -.It \&.Va Ta Yes Ta Yes Ta n -.It \&.Vt Ta Yes Ta Yes Ta >0 -.It \&.Xr Ta Yes Ta Yes Ta >0, <3 -.It \&.%A Ta \&No Ta \&No Ta >0 -.It \&.%B Ta \&No Ta \&No Ta >0 -.It \&.%C Ta \&No Ta \&No Ta >0 -.It \&.%D Ta \&No Ta \&No Ta >0 -.It \&.%I Ta \&No Ta \&No Ta >0 -.It \&.%J Ta \&No Ta \&No Ta >0 -.It \&.%N Ta \&No Ta \&No Ta >0 -.It \&.%O Ta \&No Ta \&No Ta >0 -.It \&.%P Ta \&No Ta \&No Ta >0 -.It \&.%R Ta \&No Ta \&No Ta >0 -.It \&.%T Ta \&No Ta \&No Ta >0 -.It \&.%V Ta \&No Ta \&No Ta >0 -.It \&.At Ta Yes Ta Yes Ta 1 -.It \&.Bsx Ta Yes Ta Yes Ta n -.It \&.Bx Ta Yes Ta Yes Ta n -.It \&.Db Ta \&No Ta \&No Ta 1 -.It \&.Em Ta Yes Ta Yes Ta >0 -.It \&.Fx Ta Yes Ta Yes Ta n -.It \&.Ms Ta \&No Ta Yes Ta >0 -.It \&.No Ta Yes Ta Yes Ta 0 -.It \&.Ns Ta Yes Ta Yes Ta 0 -.It \&.Nx Ta Yes Ta Yes Ta n -.It \&.Ox Ta Yes Ta Yes Ta n -.It \&.Pf Ta \&No Ta Yes Ta 1 -.It \&.Sm Ta \&No Ta \&No Ta 1 -.It \&.Sx Ta Yes Ta Yes Ta >0 -.It \&.Sy Ta Yes Ta Yes Ta >0 -.It \&.Tn Ta Yes Ta Yes Ta >0 -.It \&.Ux Ta Yes Ta Yes Ta n -.It \&.Dx Ta Yes Ta Yes Ta n -.It \&.Bt Ta \&No Ta \&No Ta 0 -.It \&.Hf Ta \&No Ta \&No Ta n -.It \&.Fr Ta \&No Ta \&No Ta n -.It \&.Ud Ta \&No Ta \&No Ta 0 -.It \&.Lb Ta \&No Ta \&No Ta 1 -.It \&.Ap Ta Yes Ta Yes Ta 0 -.It \&.Lp Ta \&No Ta \&No Ta 0 -.It \&.Lk Ta \&No Ta Yes Ta >0 -.It \&.Mt Ta \&No Ta Yes Ta >0 -.It \&.Es Ta \&No Ta \&No Ta 0 -.It \&.En Ta \&No Ta \&No Ta 0 +.It \&%A Ta \&No Ta \&No Ta >0 +.It \&%B Ta \&No Ta \&No Ta >0 +.It \&%C Ta \&No Ta \&No Ta >0 +.It \&%D Ta \&No Ta \&No Ta >0 +.It \&%I Ta \&No Ta \&No Ta >0 +.It \&%J Ta \&No Ta \&No Ta >0 +.It \&%N Ta \&No Ta \&No Ta >0 +.It \&%O Ta \&No Ta \&No Ta >0 +.It \&%P Ta \&No Ta \&No Ta >0 +.It \&%R Ta \&No Ta \&No Ta >0 +.It \&%T Ta \&No Ta \&No Ta >0 +.It \&%V Ta \&No Ta \&No Ta >0 +.It \&Ad Ta Yes Ta Yes Ta n +.It \&An Ta Yes Ta Yes Ta n +.It \&Ap Ta Yes Ta Yes Ta 0 +.It \&Ar Ta Yes Ta Yes Ta n +.It \&At Ta Yes Ta Yes Ta 1 +.It \&Bsx Ta Yes Ta Yes Ta n +.It \&Bt Ta \&No Ta \&No Ta 0 +.It \&Bx Ta Yes Ta Yes Ta n +.It \&Cd Ta Yes Ta \&No Ta >0 +.It \&Cm Ta Yes Ta Yes Ta n +.It \&Db Ta \&No Ta \&No Ta 1 +.It \&Dd Ta \&No Ta \&No Ta >0 +.It \&Dt Ta \&No Ta \&No Ta n +.It \&Dv Ta Yes Ta Yes Ta n +.It \&Dx Ta Yes Ta Yes Ta n +.It \&Em Ta Yes Ta Yes Ta >0 +.It \&En Ta \&No Ta \&No Ta 0 +.It \&Er Ta Yes Ta Yes Ta >0 +.It \&Es Ta \&No Ta \&No Ta 0 +.It \&Ev Ta Yes Ta Yes Ta n +.It \&Ex Ta \&No Ta \&No Ta 0 +.It \&Fa Ta Yes Ta Yes Ta n +.It \&Fd Ta \&No Ta \&No Ta >0 +.It \&Fl Ta Yes Ta Yes Ta n +.It \&Fn Ta Yes Ta Yes Ta >0 +.It \&Fr Ta \&No Ta \&No Ta n +.It \&Ft Ta Yes Ta Yes Ta n +.It \&Fx Ta Yes Ta Yes Ta n +.It \&Hf Ta \&No Ta \&No Ta n +.It \&Ic Ta Yes Ta Yes Ta >0 +.It \&In Ta \&No Ta \&No Ta n +.It \&Lb Ta \&No Ta \&No Ta 1 +.It \&Li Ta Yes Ta Yes Ta n +.It \&Lk Ta Yes Ta Yes Ta n +.It \&Lp Ta \&No Ta \&No Ta 0 +.It \&Ms Ta Yes Ta Yes Ta >0 +.It \&Mt Ta Yes Ta Yes Ta >0 +.It \&Nm Ta Yes Ta Yes Ta n +.It \&No Ta Yes Ta Yes Ta 0 +.It \&Ns Ta Yes Ta Yes Ta 0 +.It \&Nx Ta Yes Ta Yes Ta n +.It \&Os Ta \&No Ta \&No Ta n +.It \&Ot Ta \&No Ta \&No Ta n +.It \&Ox Ta Yes Ta Yes Ta n +.It \&Pa Ta Yes Ta Yes Ta n +.It \&Pf Ta \&No Ta Yes Ta 1 +.It \&Pp Ta \&No Ta \&No Ta 0 +.It \&Rv Ta \&No Ta \&No Ta 0 +.It \&Sm Ta \&No Ta \&No Ta 1 +.It \&St Ta \&No Ta Yes Ta 1 +.It \&Sx Ta Yes Ta Yes Ta >0 +.It \&Sy Ta Yes Ta Yes Ta >0 +.It \&Tn Ta Yes Ta Yes Ta >0 +.It \&Ud Ta \&No Ta \&No Ta 0 +.It \&Ux Ta Yes Ta Yes Ta n +.It \&Va Ta Yes Ta Yes Ta n +.It \&Vt Ta Yes Ta Yes Ta >0 +.It \&Xr Ta Yes Ta Yes Ta >0, <3 +.It \&br Ta \&No Ta \&No Ta 0 .El -.Pp -The -.Sq \&.Ot , -.Sq \&.Fr , -.Sq \&.Es -and -.Sq \&.En , -macros are obsolete. -.\" SECTION +.\" SECTION--------------------------------------------- .Sh COMPATIBILITY -The mdoc language was traditionally a -.Qq roff -macro package; most existing manuals were written with mdoc syntax -dictated by system-dependent roff installations. This section documents -compatibility with these systems. +This section documents compatibility with other roff implementations, at +this time limited to +.Xr groff 1 . +The term +.Qq historic groff +refers to those versions before the +.Pa doc.tmac +file re-write +.Pq somewhere between 1.15 and 1.19 . +.\" PARAGRAPH------------ .Pp .Bl -dash -compact .\" LIST-ITEM .It -.Sq \&.Fo +Some character sequences in groff are not handled depending on escape +style, e.g., +.Sq \e(ba and -.Sq \&.St -historically weren't always callable. Both are now correctly callable. +.Sq \e*(Ba +may not be interchanged. This is no longer the case: all character +sequences resolve to the same symbol, regardless the escape style. .\" LIST-ITEM .It +Blocks of whitespace are stripped from both macro and free-form text +lines (except when in literal mode), while groff would retain whitespace +in free-form text lines. +.\" LIST-ITEM +.It +Historic groff has many un-callable macros. Most of these (excluding +some block-level macros) are now callable, conforming to the +non-historic groff version. +.\" LIST-ITEM +.It +The vertical bar +.Sq \(ba +made historic groff +.Qq go orbital +but is a proper delimiter in this implementation. +.\" LIST-ITEM +.It .Sq \&.It \-nested -is assumed for all lists: any list may be nested and +is assumed for all lists (it wasn't in historic groff): any list may be +nested and .Sq \-enum lists will restart the sequence only for the sub-list. .\" LIST-ITEM @@ -501,40 +474,36 @@ The macro only accepts a single parameter. .\" LIST-ITEM .It -The system-name macros ( -.Ns Sq \&.At , -.Sq \&.Bsx , -.Sq \&.Bx , -.Sq \&.Fx , -.Sq \&.Nx , -.Sq \&.Ox , -and -.Sq \&.Ux ) -are callable. -.\" LIST-ITEM -.It Some manuals use .Sq \&.Li incorrectly by following it with a reserved character and expecting the delimiter to render. This is not supported. .\" LIST-ITEM .It -.Sq \&.Cd -is callable. +If an special-character control character is escaped +.Sq \e\e , +it will obviously not render the subsequent sequence. Even newer +versions of groff seem to dither on this. +.\" LIST-ITEM +.It +In groff, the +.Sq \&.Fo +macro only produces the first parameter. This is no longer the case. .El -.\" SECTION +.\" SECTION--------------------------------------------- .Sh SEE ALSO .Xr mandoc 1 , .Xr mandoc_char 7 -.\" SECTION +.\" SECTION--------------------------------------------- .Sh AUTHORS The .Nm utility was written by -.An Kristaps Dzonsons Aq kristaps@openbsd.org . -.\" SECTION +.An Kristaps Dzonsons Aq kristaps@kth.se . +.\" SECTION--------------------------------------------- .Sh CAVEATS -There are several ambiguous parts of mdoc. +There are many ambiguous parts of mdoc. +.\" PARAGRAPH------------ .Pp .Bl -dash -compact .\" LIST-ITEM @@ -599,4 +568,9 @@ etc.). There's no way to refer to references in .Sq \&.Rs/.Re blocks. +.\" LIST-ITEM +.It +The \-split and \-nosplit arguments to +.Sq \&.An +are inane. .El