Given a file of source lines that look like the following, I would like to splice together lines with escaped new lines but preserve the line numbers.
Input File
line(1) line(2)\ line(3) with space after excape\ line(4)\ line(5) line(6)\ line(7) line(8)
Solution
set fid [open [file normalize "./filename"] r]
set text [read ${fid}]
close $fid
regsub -all -- {[\\][ \t]*[\n]} ${text} "\\\n" text
while { [regsub -all -- {[\\][\n](.*?[^\\])[\n]} ${text} "\\1\n\n" text] } {}Result
>% puts $text >line(1) >line(2)line(3) with space after excapeline(4)line(5) > > > >line(6)line(7) > >line(8) > >%
Notice that the lines have been spliced together and the spliced lines occur on the corrent line in the output.