Re: unwrapping lines

[fang . lungang]

On 4月18日, 下午1时34分, Girish Kulkarni <gee...@gmail.com> wrote:
> Hello,
>
> I'm stuck with a curious problem and wonder if I can solve it in
> Emacs. I have a data file produced by Mathematica that lists four
> quantities. High precision means these numbers tend to be long so
> Mathematica often has to truncate lines. It does so by putting in a
> backslash and continuing on the next line. For example:
>
> 0.17000000000000004 0.10500954682364379 0.20481153067700028 0.309821\
> 0775006441
> 0.18000000000000005 0.12459404398470066 0.22952096247531506 0.354115\
> 0064600157
> 0.19000000000000006 0.14646262095984275 0.25562017297341694 0.402082\
> 7939332597
>
> I need to use these data in a Fortran 77 program. But Fortran has
> problems reading numbers in that format. In Emacs I can remove that
> backslash easily but that doesn't solve my problem. (Fortran then
> treats the continued digits as a fifth quantity. This "fifth quantity"
> is sometimes present and sometimes absent.)
>
> Is there any way in which I can "unwrap" the lines so that all four
> quantities appear in the same line? For example, I want the above to
> look like:
>
> 0.17000000000000004 0.10500954682364379 0.20481153067700028
> 0.3098210775006441
> 0.18000000000000005 0.12459404398470066 0.22952096247531506
> 0.3541150064600157
> 0.19000000000000006 0.14646262095984275 0.25562017297341694
> 0.4020827939332597
>
> I've tried using M-x replace-string with C-q C-d C-q C-d and C-d C-d
> to replace "\" with two DELETE characters. Didn't work. Could somebody
> help?
You may try:
M-x query-replace-regexp <ret> \\C-q C-j <ret><ret>
> Regards,
> Girish
>
> --
> Girish Kulkarni
> Allahabad, India