On Sat, Dec 26, 2015, Dave wrote: > Here's what I'm trying to do. I have a lengthy input file to be > processed in no-fill mode. For 99% of this file, that will work > just fine: that is, the input lines will fit within the the page. > A few lines, however, are too long for the page, and in no-fill > mode groff happily sends them past the margin and even past the > edge of the paper. > > I don't want groff to handle these lines; the exact way each such > line should be handled depends on a number of factors and really > requires manual intervention. But I do want groff to alert me to > such cases, so that I know where to find them without having to > flip through a couple hundred pages of output.
Since you're in no-fill mode, it's a perfect job for the little-used input line trap request. This should do what you want. .de foo . it 1 bar . di baz .. . .de bar . di . if \\n[dl]>\\n[.l] \ . tm Line \\n[.c] exceeds width. . baz . foo .. . .de bat .di .. . .em bat . .ll 4i .nf .foo First line of text. Second line of text. etc. Any line exceeding 4i will be reported. The .em (bat) prevents groff from complaining about the final diversion being incomplete. -- Peter Schaffter http://www.schaffter.ca
