The warning output gets mangled by the progress meter

[combor]

I did this

Hi, I'm having problems hiding the progress bar but keeping the warings on the screen.
With such command I'm getting only the last error:

curl -Lkf --connect-timeout 5 \
    --max-time 10 \
    --retry 5 \
    --retry-max-time 40 \
    --show-error \
    --silent \
    --output /tmp/response \
    -w "Requested URL: %{url_effective}\nResponse code: %{http_code}\n" \
    'https://httpstat.us/503'

Requested URL: https://httpstat.us/503
Response code: 503
curl: (22) The requested URL returned error: 503 Service Unavailable

If I remove --silent I'm getting this:

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
Warning: Transient problem: HTTP error Will retry in 1 seconds. 5 retries
Warning: left.
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
Warning: Transient problem: HTTP error Will retry in 2 seconds. 4 retries
Warning: left.
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
Warning: Transient problem: HTTP error Will retry in 4 seconds. 3 retries
Warning: left.
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
Warning: Transient problem: HTTP error Will retry in 8 seconds. 2 retries
Warning: left.
^C

Or this ( no new lines before Warning) - depends on the error type:

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0Warning: Transient problem: timeout Will retry in 1 seconds. 5 retries left.
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0Warning: Transient problem: timeout Will retry in 2 seconds. 4 retries left.
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0Warning: Transient problem: timeout Will retry in 4 seconds. 3 retries left.
^C

How can I hide the progress bar? After some googling it seems like the most wanted feature on the internet :)

Maybe the new flag can be introduced? Something like --do-not-ever-show-me-the-progress-bar-as-i-know-what-im-doing ?

I expected the following

Warning: Transient problem: timeout Will retry in 1 seconds. 5 retries left.
Warning: Transient problem: timeout Will retry in 2 seconds. 4 retries left.
Warning: Transient problem: timeout Will retry in 4 seconds. 3 retries left.
...
curl: (22) The requested URL returned error: 503 Service Unavailable

curl/libcurl version

curl 7.54.0 (x86_64-apple-darwin18.0) libcurl/7.54.0 LibreSSL/2.6.5 zlib/1.2.11 nghttp2/1.24.1
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp smb smbs smtp smtps telnet tftp
Features: AsynchDNS IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz HTTP2 UnixSockets HTTPS-proxy

operating system

Darwin GBML242731 18.7.0 Darwin Kernel Version 18.7.0: Tue Aug 20 16:57:14 PDT 2019; root:xnu-4903.271.2~2/RELEASE_X86_64 x86_64

[bagder]

Hi!

Thanks for your interest in curl and related manners, but you seem to have asked a question or help, and this is an issue tracker that we reserve for dealing with issues/bugs really.

Please ask questions and ask for support etc on the dedicated mailing lists. You will also reach a lot more people that way!

You clearly noticed that -s / --silent removed the progress bar so for being "like the most wanted feature on the internet :)" it was rather simple, right?

Now you want to keep some "talk" output and remove other and that's a different matter and we don't really let the user pick-and-choose among all of them. We have normal mode, silent mode and verbose mode. You need to pick one of them.

Or work on adding some sort of new selection option that isn't currently available...

[combor]

Thanks for the quick response. As you probably noticed this is a bug report as well. Please check the second output from the non-silenced curl. The output with warings doesn't have new lines which makes it non-readable. Is this something that you consider as a bug?

[bagder]

I guess it is a bug yes.

The problem is of course that we have both the progress meter and the warnings getting shown and it's a bad mix since the progress meter will destroy anything else that is also shown... It will never be "pretty".

[combor]

Thanks, sounds like a good solution would be to hide the progress meter.

[bagder]

When?

[combor]

Maybe when a flag is specified to hide it ? I mean, if it's hard to make it pretty by default I recon It would be desirable to let user to choose what to output.

[bagder]

@combor, I presume then you'd be happy with something in the style of #4470 which allows users to switch off the progress-bar only, but not making curl silent otherwise?

[combor]

Yes, that would be perfect. Thanks @bagder

[jay]

0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0Warning: Transient problem: timeout Will retry in 4 seconds. 3 retries left.
^C

I can't reproduce the missing newline using master in Windows 7. Do you see that when you use master?