mandoc: Radically simplify the definitions what the message levels ERROR

mandoc: Radically simplify the definitions what the message levels ERROR

[schwarze]

Log Message:
-----------
Radically simplify the definitions what the message levels ERROR
and WARNING mean: minus 20 lines of mdoc source.  OK jmc@.

Modified Files:
--------------
    mandoc:
        mandoc.1

Revision Data
-------------
Index: mandoc.1
===================================================================
RCS file: /home/cvs/mandoc/mandoc/mandoc.1,v
retrieving revision 1.215
retrieving revision 1.216
diff -Lmandoc.1 -Lmandoc.1 -u -p -r1.215 -r1.216
--- mandoc.1
+++ mandoc.1
@@ -719,32 +719,13 @@ so using GNU troff instead of
 .Nm
 to process the file may be preferable.
 .It Cm error
-An input file contains invalid syntax that cannot be safely interpreted.
-By discarding part of the input or inserting missing tokens,
-the parser is able to continue, and the error does not prevent
-generation of formatted output, but typically, preparing that
-output involves information loss, broken document structure
-or unintended formatting, no matter whether
-.Nm
-or GNU troff is used.
-In many cases, the output of
-.Nm
-and GNU troff is identical, but in some,
-.Nm
-is more resilient than GNU troff with respect to malformed input.
-.Pp
-Non-existent or unreadable input files are also reported on the
-.Cm error
-level.
-In that case, the parser cannot even be started and no output
-is produced from those input files.
+Indicates a risk of information loss or severe misformatting,
+in most cases caused by serious syntax errors.
 .It Cm warning
-An input file uses obsolete, discouraged or non-portable syntax.
-All the same, the meaning of the input is unambiguous and a correct
-rendering can be produced.
-Documents causing warnings may render poorly when using other
-formatting tools instead of
-.Nm .
+Indicates a risk that the information shown or its formatting
+may mismatch the author's intent in minor ways.
+Additionally, syntax errors are classified at least as warnings,
+even if they do not usually cause misformatting.
 .It Cm style
 An input file uses dubious or discouraged style.
 This is not a complaint about the syntax, and probably neither
--
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