🚀 go-pugleaf

Hello,

while porting GNU diff 2.0 to a Machine Whose Name I Shall Not Mention,
I noticed that diff when called with the --side-by-side option sometimes
would misalign long lines containing tabs. I managed to track it down
to the following lines; when the lines marked with "+" are added, the
problem goes away. The justification for this patch is that otherwise
in_position is updated, while out_position is not *and may still be smaller
than out_bound*.

*** oldside.c	Wed Jan  6 23:39:40 1993
--- side.c	Wed Jan  6 23:39:25 1993
***************
*** 96,115 ****
--- 96,121 ----
  		{
  		  out_position++;
  		  putc (' ', out);
  		}
  	    else
  	      if (out_position + spaces < out_bound)
  		{
  		  out_position += spaces;
  		  putc (c, out);
  		}
+ 	      else
+ 	        while (out_position < out_bound && spaces--)
+ 		  {
+ 		    out_position++;
+ 		    putc (' ', out);
+ 		  }
  	  }
  	  break;
  
  	case '\r':
  	  {
  	    putc (c, out);
  	    tab_from_to (0, indent);
  	    in_position = out_position = 0;
  	  }
  	  break;

Matthias

-----
Matthias Neeracher                                   neeri@iis.ethz.ch
   "These days, though, you have to be pretty technical before you can 
    even aspire to crudeness." -- William Gibson, _Johnny Mnemonic_