visual mode gq not reflowing comment block

Question

I am looking for an easy way to reflow blocks of comments (in GO). According to this post I should be able to just run gq on a block and it will reflow automatically, but this doesn't seem to work.

Here is some sample text:

// PrintStarredRepos tries to print tags of repo's that have been starred
// adaf da df a da fs daf e according to the "user" configuration setting that is read in from the
// config file.

And this is what the text looks like after I run gq on it.

// PrintStarredRepos tries to print tags of repo's that have been starred //
adaf da df a da fs daf e according to the "user" configuration setting that is
read in from the // config file.

Here are relevant settings in my vimrc based on details I found in another post.

• textwidth=80
• filetype plugin indent on
• set ft? (filetype=go)
• set comments? (comments=s1:/,mb:,ex:*/,://)

I can't figure out why comments aren't wrapping?

Answer 1

In my vimrc file I had set paste turned on.

When I removed this configuration I was able to get comments to flow correctly.

Answer 2

You need to check your formatoptions setting. According to the manual you need the "q" flag to be present:

                                                        *fo-table*
You can use the 'formatoptions' option  to influence how Vim formats text.
'formatoptions' is a string that can contain any of the letters below.  The
default setting is "tcq".  You can separate the option letters with commas for
readability.

letter   meaning when present in 'formatoptions'
[...]
q   Allow formatting of comments with "gq".
    Note that formatting will not change blank lines or lines containing
    only the comment leader.  A new paragraph starts after such a line,
    or when the comment leader changes.