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Top Forums UNIX for Dummies Questions & Answers Removing double spaces in code Post 302652307 by figaro on Thursday 7th of June 2012 02:41:33 AM
Old 06-07-2012
Removing double spaces in code

I want to be able to spot double spaces in code and then also replace it with a single space. Double spaces sometimes occur accidentally in code, but most often they are indents or seperate code from comments ("//"). In summary: I want to replace double spaces with single spaces where they do not appear at the beginning of the line and do not appear prior to "//".
How do I do this in for instance sed?
 

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roffbib(1)						      General Commands Manual							roffbib(1)

Name
       roffbib - run off bibliographic database

Syntax
       roffbib [options] [file...]

Description
       The  command prints out all records in a bibliographic database, in bibliography format rather than as footnotes or endnotes.  Generally it
       is used in conjunction with

       sortbib	database | roffbib

Options
       The command accepts most of the options understood by nroff(1).

       -Tterm	   Uses specified name as terminal type for which output is prepared.

       -x	   Suppresses the printing of abstracts.

       If abstracts or comments are entered following the %X field key, formats them into paragraphs for an annotated  bibliography.   Several	%X
       fields may be given if several annotation paragraphs are desired.

       -e     Formats text with equally spaced words, justified lines, and full resolution.

       -h     Uses tabs in horizontal spacing to speed output and reduce output character count.  Tab characters are assumed to be every 8 nominal
	      character widths.

       -n     Uses specified number (-nN) as first page to be printed.

       -o     Uses specified list (-olist) as only pages to be printed.  A range N-M means pages N through M.  An initial -N means from the begin-
	      ning to page N.  A final N- means from N to the end.

       -s     Stops after specified number of pages (-sn).

       -m mac Specifies  a user-defined set of macros with space between -m and the macro file name.  This set of macros replaces the ones defined
	      in /usr/lib/tmac/tmac.bib.

       -V     Sends output to the Versatec.

       -Q     Queues output for the phototypesetter.

       -raN   Sets named register a to specified value N.

       Four command-line registers control formatting style of the bibliography, much like the number registers of ms(7).  The command-line  argu-
       ment  -rN1  numbers  the references starting at one (1).  The flag -rV2 double spaces the bibliography, while -rV1 double spaces references
       but single spaces annotation paragraphs.  The line length can be changed from the default 6.5 inches to 6 inches with the  -rL6i  argument,
       and the page offset can be set from the default of 0 to one inch by specifying -rO1i (capital O, not zero).  Note: with the -V and -Q flags
       the default page offset is already one inch.

Files
       /usr/lib/tmac/tmac.bib  file of macros used by nroff/troff

See Also
       addbib(1), indxbib(1), lookbib(1), refer(1), sortbib(1)

																	roffbib(1)
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