quiche: Enable IDLE egress handling

Follow-up to 544abeea which added the handling but wrongly left it
commented out.

Closes https://github.com/curl/curl/pull/11000

docs/examples/protofeats.c: Outputs all protocols and features

Showing off one way to get to char pointer arrays of info returned by
curl_version_info()

Closes #10991

tests/keywords.pl: remove

This script does not work since the introduction of the test
preprocessing. If we need this functionality, it probably needs to be
moved into the runtests t

tests/keywords.pl: remove

This script does not work since the introduction of the test
preprocessing. If we need this functionality, it probably needs to be
moved into the runtests tool or similar.

Reported-by: Dan Fandrich
Fixes #10895
Closes #10987

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http2: support HTTP/2 to forward proxies, non-tunneling

- with `--proxy-http2` allow h2 ALPN negotiation to
forward proxies
- applies to http: requests against a https: proxy only,

http2: support HTTP/2 to forward proxies, non-tunneling

- with `--proxy-http2` allow h2 ALPN negotiation to
forward proxies
- applies to http: requests against a https: proxy only,
as https: requests will auto-tunnel
- adding a HTTP/1 request parser in http1.c
- removed h2h3.c
- using new request parser in nghttp2 and all h3 backends
- adding test 2603 for request parser
- adding h2 proxy test cases to test_10_*

scorecard.py: request scoring accidentally always run curl
with '-v'. Removed that, expect double numbers.

labeller: added http1.* and h2-proxy sources to detection

Closes #10967

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curl_easy_unescape.3: rename the argument

and highlight it appropriately in the text.

Closes #10979

autotools: sync up clang picky warnings with cmake

Bringing missing options over from CMake.

Move around existing `-Wno-pointer-bool-conversion` option to come
_after_ `-Wconver

autotools: sync up clang picky warnings with cmake

Bringing missing options over from CMake.

Move around existing `-Wno-pointer-bool-conversion` option to come
_after_ `-Wconversion`.

Reviewed-by: Marcel Raad
Closes #10974

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tests/libtest/lib1900.c: remove

This file was left behind when the rest of the test was previously removed.

Follow-up to e50a877df74f

src/tool_operhlp.c: fix value stored to 'uerr' is never read

Ref: https://github.com/curl/curl/pull/10974#issuecomment-1510461343
Reported-by: Viktor Szakats
Closes #10982

cmake: speed up and extend picky clang/gcc options

Extend existing picky compiler options with ones missing compared to
autotools builds. Also sync options between clang and gcc.

cmake: speed up and extend picky clang/gcc options

Extend existing picky compiler options with ones missing compared to
autotools builds. Also sync options between clang and gcc.

Redesign the way we enable these options to avoid the slow option
detection almost completely.

This reduces the number of detections from 35 to zero for clang and
3 for gcc, even after adding a bunch of new options.

clang 3.0 (2011-11-29) and gcc 2.95 (1999-07-31) now required.

Also show enabled picky options.

Ref: https://github.com/libssh2/libssh2/pull/952

Reviewed-by: Daniel Stenberg
Closes #10973

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nbtlm: use semicolons instead of commas for (void) args

Closes #10978

multi: free up more data earleier in DONE

Before checking for more users of the connection and possibly bailing
out.

Fixes #10971
Reported-by: Paweł Wegner
Closes #10972

RELEASE-NOTES: synced

curl: do NOT append file name to path for upload when there's a query

Added test 425 to verify.

Reported-by: Dirk Rosenkranz
Bug: https://curl.se/mail/archive-2023-04/0008.html

curl: do NOT append file name to path for upload when there's a query

Added test 425 to verify.

Reported-by: Dirk Rosenkranz
Bug: https://curl.se/mail/archive-2023-04/0008.html
Closes #10969

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libcurl-thread.3: improved name resolver wording

And make better .SH sections

Closes #10966

CURLOPT_PROXY_SSL_VERIFYPEER.3: fix minor grammar mistake

Closes #10968

curl: add --proxy-http2

For trying HTTP/2 with an HTTPS proxy.

Closes #10926

KNOWN_BUGS: remove fixed or outdated issues, move non-bugs

- remove h3 issues believed to be fixed

- make the flaky CI issue be generic and not Windows specific

- "TLS sess

KNOWN_BUGS: remove fixed or outdated issues, move non-bugs

- remove h3 issues believed to be fixed

- make the flaky CI issue be generic and not Windows specific

- "TLS session cache does not work with TFO" now documented

This is now a documented restriction and not a bug. TFO in general is
rarely used and has other problems, making it a low-priotity thing to
work on.

- remove "Renegotiate from server may cause hang for OpenSSL backend"

This is an OpenSSL issue, not a curl one. Even if it taints curl.

- rm "make distclean loops forever"

- rm "configure finding libs in wrong directory"

Added a section to docs/INSTALL.md about it.

- "A shared connection cache is not thread-safe"

Moved over to TODO and expanded for other sharing improvements we
could do

- rm "CURLOPT_OPENSOCKETPAIRFUNCTION is missing"

- rm "Blocking socket operations in non-blocking API"

Already listed as a TODO

- rm "curl compiled on OSX 10.13 failed to run on OSX 10.10"

Water under the bridge. No one cares about this anymore.

- rm "build on Linux links libcurl to libdl"

Verified to not be true (anymore).

- rm "libpsl is not supported"

The cmake build supports it since cafb356e19cda22

Closes #10963

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url: fix PVS nits

- expression 'hostptr' is always true
- a part of conditional expression is always true: proxypasswd
- expression 'proxyuser' is always true
- avoid multiple Cu

url: fix PVS nits

- expression 'hostptr' is always true
- a part of conditional expression is always true: proxypasswd
- expression 'proxyuser' is always true
- avoid multiple Curl_now() calls in allocate_conn

Ref: #10929
Closes #10959

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bufq: simplify since expression is always true

The check for 'len' is already done so it will remain true until
updated. Pointed out by PVS.

Ref: #10929
Closes #10958

hash: fix assigning same value

Pointed out by PVS

Ref: #10929
Closes #10956

cookie: address PVS nits

- avoid assigning the same value again
- remove superfluous check of co->domain
- reduce variable scope for namep/valuep

Ref: #10929
Closes #109

cookie: address PVS nits

- avoid assigning the same value again
- remove superfluous check of co->domain
- reduce variable scope for namep/valuep

Ref: #10929
Closes #10954

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cf-socket: Disable socket receive buffer by default

- Disable socket receive buffer unless USE_RECV_BEFORE_SEND_WORKAROUND
is in place.

While we would like to use the receive

cf-socket: Disable socket receive buffer by default

- Disable socket receive buffer unless USE_RECV_BEFORE_SEND_WORKAROUND
is in place.

While we would like to use the receive buffer, we have stalls in
parallel transfers where not all buffered data is consumed and no socket
events happen.

Note USE_RECV_BEFORE_SEND_WORKAROUND is a Windows sockets workaround
that has been disabled by default since b4b6e4f1, due to other bugs.

Closes https://github.com/curl/curl/pull/10961

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cf-h2-proxy: fix processing ingress to stop too early

- progress ingress stopped too early, causing data
from the underlying filters to not be processed and
report that no tunnel

cf-h2-proxy: fix processing ingress to stop too early

- progress ingress stopped too early, causing data
from the underlying filters to not be processed and
report that no tunnel data was available
- this lead to "hangers" where no socket activity was
seen but data rested in buffers

Closes #10952

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http3: check stream_ctx more thoroughly in all backends

- callbacks and filter methods might be invoked at unexpected
times, e.g. when the transfer's stream_ctx has not been initialize

http3: check stream_ctx more thoroughly in all backends

- callbacks and filter methods might be invoked at unexpected
times, e.g. when the transfer's stream_ctx has not been initialized
yet or, more likely, has already been taken down.
- check for existance of stream_ctx in such places and return
an error or silently succeed the call.

Closes #10951

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ftp: fix 'portsock' variable was assigned the same value

Pointed out by PVS

Ref: #10929
Closes #10955