git.diff

diff --git a/plugin/gist.vim b/plugin/gist.vim
index 574b7e8..ffc276f 100644
--- a/plugin/gist.vim
+++ b/plugin/gist.vim
@@ -556,6 +556,11 @@ function! s:GistPost(user, token, content, private)
   let quote = &shellxquote == '"' ?  "'" : '"'
   let url = 'https://gist.github.com/gists'
   let res = system('curl -i -d @'.quote.file.quote.' '.url)
+  echohl Error
+  for _ in split(res, '\n')
+    echom _
+  endfor
+  echohl None
   call delete(file)
   let res = matchstr(split(res, '\(\r\?\n\|\r\n\?\)'), '^Location: ')
   let res = substitute(res, '^[^:]\+: ', '', '')

messages

curl: (60) SSL certificate problem, verify that the CA cert is OK

More details here: http://curl.haxx.se/docs/sslcerts.html

curl performs SSL certificate verification by default, using a "bundle"
 of Certificate Authority (CA) public keys (CA certs). The default
 bundle is named curl-ca-bundle.crt; you can specify an alternate file
 using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
 the bundle, the certificate verification probably failed due to a
 problem with the certificate (it might be expired, or the name might
 not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
 the -k (or --insecure) option.

Thanks a lot for adding this, this diff file helped me sharing a diff which is something I was struggling with . 🙏