Paragraph reformatting while using smartindent in Vim - vim

Question

In Vim 7.4, how can I reformat paragraphs the following way with the gq} command while using the set smartindent option (I need that option)?
Before reformatting:
1 Sed ut perspiciatis, unde omnis iste natus error sit voluptatem
accusantium doloremque laudantium, totam rem aperiam eaque ipsa,
quae ab illo inventore veritatis et quasi architecto beatae vitae
dicta sunt, explicabo.
2 Nemo enim ipsam voluptatem, quia voluptas
sit, aspernatur aut odit aut fugit, sed quia consequuntur magni
dolores eos, qui ratione voluptatem sequi nesciunt, neque porro
quisquam est, qui dolorem ipsum, quia dolor sit, amet,
consectetur, adipisci velit, sed quia non numquam eius modi
tempora incidunt, ut labore et dolore magnam aliquam quaerat
voluptatem.
After reformatting (what I want) — notice the line numbers:
1 Sed ut perspiciatis, unde omnis iste natus error sit voluptatem
2 accusantium doloremque laudantium, totam rem aperiam eaque ipsa,
3 quae ab illo inventore veritatis et quasi architecto beatae vitae
4 dicta sunt, explicabo.
5 Nemo enim ipsam voluptatem, quia voluptas
6 sit, aspernatur aut odit aut fugit, sed quia consequuntur magni
7 dolores eos, qui ratione voluptatem sequi nesciunt, neque porro
8 quisquam est, qui dolorem ipsum, quia dolor sit, amet,
9 consectetur, adipisci velit, sed quia non numquam eius modi
10 tempora incidunt, ut labore et dolore magnam aliquam quaerat
11 voluptatem.
With set formatoptions=qw, I get the desired result (the block ‘After reformatting’). But if I add the option set smartindent, every line of the paragraph becomes indented (what I get):
1 Sed ut perspiciatis, unde omnis iste natus error sit
2 voluptatem accusantium doloremque laudantium, totam rem
3 aperiam eaque ipsa, quae ab illo inventore veritatis et quasi
4 architecto beatae vitae dicta sunt, explicabo.
5 Nemo enim ipsam voluptatem, quia voluptas sit, aspernatur aut
6 odit aut fugit, sed quia consequuntur magni dolores eos, qui
7 ratione voluptatem sequi nesciunt, neque porro quisquam est,
8 qui dolorem ipsum, quia dolor sit, amet, consectetur, adipisci
9 velit, sed quia non numquam eius modi tempora incidunt, ut
10 labore et dolore magnam aliquam quaerat voluptatem.

Answer 1

Turn off smartindent. Don't replace it with autoindent. Both of these options will use the indent of the 1st line for any following lines in your simple (prose) case. smartindent is actually pretty bad anyway and mostly discouraged; it has been replaced with cindent and expression-based indenting (via indentexpr). Mostly you can actually turn on filetype-specific indent rules, but I don't know of any that exist for prose.

Answer 2

If you want automatic indentation in prose, I would suggest using 'autoindent' rather than 'smartindent' (which is not actually very smart). Combine that with a 2 in your 'formatoptions' setting, and you can reformat existing multiline paragraphs and the indent will remain correct on the 2nd line and higher.
But I know of no way to configure Vim so that it will indent the first line and not the other lines. You need to set the indent of either the first or second line manually, then Vim can format the rest of the lines properly.