# $Id: fixexamp.in,v 1.1 2004-05-03 05:17:49 behdad Exp $
# Fix up c2man output for inclusion of examples in the c2man manual page.
# This file gets processed to remove comments because some sed's can't handle
# them. Can you believe it?.

# The double backslashes in variable interpolations are because sed consumes
# one, not because we're defining macros here (we aren't).

# special hack: rename ctype_ex to ctype just to make that example neat.
s/ctype_ex/ctype/

# replace the .TH line with a title line.
# we only alter the title length just as the title line is output so an example
# that goes over a page break doesn't damage the real manual page's header.
# Also, calculate and remember the shortened line length: groff doesn't reset
# .ll in .SH & .TP macros, so we use an absolute value later rather than
# relative changes.
/^\.TH /{
s/^\.TH "\([^"]*\)" \([^ ]*\) .*/.ds [H \1\\|(\\|\2\\|)/
a\
.ds [D UNIX Programmer's Manual\
.po +1i\
.lt -1.5i\
.tl @\\*([H@\\*([D@\\*([H@\
.lt +1.5i\
.po -1i\
.RS +1i\
.nr CL \\n(.l-0.5i
}

# surround all the .SH and .SS lines with page offset indents
# the .ne line will force a page break before the .po is evaluated, in the case
# where a .SH in an example is at the very bottom of the page. Otherwise the .SH
# could cause the break, resulting in the wrong .po setting for the new page's
# title line.
/^\.S[SH] /{
i\
.br\
.ne 3\
.RE\
.po +1i
a\
.po -1i\
.RS +1i\
.ll \\n(CLu
}

# handle tagged paragraphs; .TP retains .RS setting, but resets .ll
# since the parameter to .TP is on the next line, we read the next line in first
/^.TP/{
n
a\
.ll \\n(CLu
}

# up the line length again at the end of the example file
$a\
.ll \\n(CLu+0.5i\
.RE