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-rw-r--r--mandoc.197
1 files changed, 69 insertions, 28 deletions
diff --git a/mandoc.1 b/mandoc.1
index ac49d4ab..11ac4ac3 100644
--- a/mandoc.1
+++ b/mandoc.1
@@ -75,11 +75,6 @@ and for the
.Xr man 7
.Ic \&TH
macro.
-This can also be used to perform style checks according to the
-conventions of one operating system while running on a different
-operating system; see
-.Sx Style messages
-for details.
.It Fl K Ar encoding
Specify the input encoding.
The supported
@@ -151,14 +146,33 @@ to be reported on the standard error output and to affect the exit status.
The
.Ar level
can be
+.Cm base ,
.Cm style ,
.Cm warning ,
.Cm error ,
or
-.Cm unsupp ;
+.Cm unsupp .
+The
+.Cm base
+level automatically derives the operating system from the contents of the
+.Ic \&Os
+macro, from the
+.Fl Ios
+command line option, or from the
+.Xr uname 3
+return value.
+The levels
+.Cm openbsd
+and
+.Cm netbsd
+are variants of
+.Cm base
+that bypass autodetection and request validation of base system
+conventions for a particular operating system.
+The level
.Cm all
is an alias for
-.Cm style .
+.Cm base .
By default,
.Nm
is silent.
@@ -224,7 +238,7 @@ See
.It Fl T Cm lint
Parse only: produce no output.
Implies
-.Fl W Cm style .
+.Fl W Cm all .
.It Fl T Cm locale
Encode output using the current locale.
This is the default.
@@ -596,19 +610,23 @@ option:
.Pp
.Bl -tag -width Ds -compact
.It 0
-No style suggestions, warnings or errors occurred, or those that
-did were ignored because they were lower than the requested
+No base system convention violations, style suggestions, warnings,
+or errors occurred, or those that did were ignored because they
+were lower than the requested
.Ar level .
.It 1
-At least one style suggestion occurred, but no warning or error, and
+At least one base system convention violation or style suggestion
+occurred, but no warning or error, and
+.Fl W Cm base
+or
.Fl W Cm style
was specified.
.It 2
At least one warning occurred, but no error, and
.Fl W Cm warning
-or
-.Fl W Cm style
-was specified.
+or a lower
+.Ar level
+was requested.
.It 3
At least one parsing error occurred,
but no unsupported feature was encountered, and
@@ -636,7 +654,7 @@ to exit at once, possibly in the middle of parsing or formatting a file.
Note that selecting
.Fl T Cm lint
output mode implies
-.Fl W Cm style .
+.Fl W Cm all .
.Sh EXAMPLES
To page manuals to the terminal:
.Pp
@@ -669,12 +687,19 @@ parser:
Messages displayed by
.Nm
follow this format:
-.Pp
-.D1 Nm Ns : Ar file : Ns Ar line : Ns Ar column : level : message : macro args
+.Bd -ragged -offset indent
+.Nm Ns :
+.Ar file : Ns Ar line : Ns Ar column : level : message : macro args
+.Pq Ar os
+.Ed
.Pp
Line and column numbers start at 1.
Both are omitted for messages referring to an input file as a whole.
Macro names and arguments are omitted where meaningless.
+The
+.Ar os
+operating system specifier is omitted for messages that are relevant
+for all operating systems.
Fatal messages about invalid command line arguments
or operating system errors, for example when memory is exhausted,
may also omit the
@@ -732,9 +757,15 @@ so it may occasionally issue bogus suggestions.
Please use your good judgement to decide whether any particular
.Cm style
suggestion really justifies a change to the input file.
+.It Cm base
+A convertion used in the base system of a specific operating system
+is not adhered to.
+These are not markup mistakes, and neither the quality of formatting
+nor portability are in danger.
.El
.Pp
Messages of the
+.Cm base ,
.Cm style ,
.Cm warning ,
.Cm error ,
@@ -746,9 +777,15 @@ are hidden unless their level, or a lower level, is requested using a
option or
.Fl T Cm lint
output mode.
-.Ss Style messages
-As indicated below, some style checks are only performed if a
-specific operating system name occurs in the arguments of the
+.Pp
+As indicated below, all
+.Cm base
+and some
+.Cm style
+checks are only performed if a specific operating system name occurs
+in the arguments of the
+.Fl W
+command line option, of the
.Ic \&Os
macro, of the
.Fl Ios
@@ -756,6 +793,7 @@ command line option, or, if neither are present, in the return value
of the
.Xr uname 3
function.
+.Ss Conventions for base system manuals
.Bl -ohang
.It Sy "Mdocdate found"
.Pq mdoc , Nx
@@ -778,6 +816,17 @@ macro does not use CVS
keyword substitution, but using it is conventionally expected in the
.Ox
base system.
+.It Sy "RCS id missing"
+.Pq Ox , Nx
+The manual page lacks the comment line with the RCS identifier
+generated by CVS
+.Ic OpenBSD
+or
+.Ic NetBSD
+keyword substitution as conventionally used in these operating systems.
+.El
+.Ss Style suggestions
+.Bl -ohang
.It Sy "legacy man(7) date format"
.Pq mdoc
The
@@ -791,14 +840,6 @@ Consider using the conventional
date format
.Dq "Month dd, yyyy"
instead.
-.It Sy "RCS id missing"
-.Pq Ox , Nx
-The manual page lacks the comment line with the RCS identifier
-generated by CVS
-.Ic OpenBSD
-or
-.Ic NetBSD
-keyword substitution as conventionally used in these operating systems.
.It Sy "duplicate RCS id"
A single manual page contains two copies of the RCS identifier for
the same operating system.