[jackie_w]

@oldbwl,

Here are 3 simple ways to convert your test RTF to an EPUB with line spacing as you like it.

1. Convert the test RTF to EPUB with the following in the Convert - Look&Feel - ExtraCSS box
   

   p {margin-top:0; margin-bottom:0}

   [This may be what dwanthny was referring to as his default Calibre settings -- Edit: having seen the above apparently not]
   
   You'd have to experiment to see whether this works for all your RTFs.
   
   
2. Open the test RTF in Word and Save-As Webpage-filtered. Import the resulting HTML file into Calibre, which will turn it into a ZIP file. Convert ZIP to EPUB with the Look&Feel - ExtraCSS box empty.
   
   This option should work for all RTFs.
   
   
3. Stop using empty paragraphs as spacers in RTF files. Only use them where specifically required e.g. scene-breaks. Then convert RTF to EPUB with the Look&Feel - ExtraCSS box empty.
   
   You could easily set up a macro in Word to remove double-^p's whilst making sure that 3-or-more ^p's were not removed. Editing an existing RTF could then be a simple [Alt]+key operation. If you want any help creating such a macro send me a PM.