When a .Tg is attached to a paragraph, attach the permalink
to the first word, or the first few words if they are short.

Support manual tagging of .Pp, .Bd, .D1, .Dl, .Bl, and .It.
In HTML output, improve the logic for writing inside permalinks:
skip them when there is no child content or when there is a risk
that the children might contain flow content.

Messages of the -Wbase level now print STYLE:. Since this
causes horrible churn anyway, profit of the opportunity to stop
excessive testing, such that this is hopefully the last instance
of such churn. Consistently use OpenBSD RCS tags, blank .Os,
blank fourth .TH argument, and Mdocdate like everywhere else.
Use -Ios=OpenBSD for platform-independent predictable output.

cope with changes in BASE messages

churn related to the new style message about RCS ids

churn caused by the new Mdocdate messages, no easy way to avoid this :(

Move .sp to the roff modules. Enough infrastructure is in place
now that this actually saves code: -70 LOC.

Parser reorg:
Generate the first node on the roff level: .br
Fix some column numbers in diagnostic messages while here.

improve diagnostics regarding arguments of .An .Pp .Lp .br .sp
in particular, get rid of check_count(..., CHECK_EQ, 0)

Support manual tagging of .Pp, .Bd, .D1, .Dl, .Bl, and .It.
In HTML output, improve the logic for writing inside permalinks:
skip them when there is no child content or when there is a risk
that the children might contain flow content.

Messages of the -Wbase level now print STYLE:. Since this
causes horrible churn anyway, profit of the opportunity to stop
excessive testing, such that this is hopefully the last instance
of such churn. Consistently use OpenBSD RCS tags, blank .Os,
blank fourth .TH argument, and Mdocdate like everywhere else.
Use -Ios=OpenBSD for platform-independent predictable output.

cope with changes in BASE messages

churn related to the new style message about RCS ids

churn caused by the new Mdocdate messages, no easy way to avoid this :(

Move .sp to the roff modules. Enough infrastructure is in place
now that this actually saves code: -70 LOC.

Parser reorg:
Generate the first node on the roff level: .br
Fix some column numbers in diagnostic messages while here.

improve diagnostics regarding arguments of .An .Pp .Lp .br .sp
in particular, get rid of check_count(..., CHECK_EQ, 0)

Messages of the -Wbase level now print STYLE:. Since this
causes horrible churn anyway, profit of the opportunity to stop
excessive testing, such that this is hopefully the last instance
of such churn. Consistently use OpenBSD RCS tags, blank .Os,
blank fourth .TH argument, and Mdocdate like everywhere else.
Use -Ios=OpenBSD for platform-independent predictable output.

cope with changes in BASE messages

churn related to the new style message about RCS ids

churn caused by the new Mdocdate messages, no easy way to avoid this :(

Move .sp to the roff modules. Enough infrastructure is in place
now that this actually saves code: -70 LOC.

Parser reorg:
Generate the first node on the roff level: .br
Fix some column numbers in diagnostic messages while here.

improve diagnostics regarding arguments of .An .Pp .Lp .br .sp
in particular, get rid of check_count(..., CHECK_EQ, 0)