8db0e286b3
- drop x-hacks for curl internal variables and certain autotools ones that do not hold custom values. - make x-hacks consistently use `"x$var" = "xval"` style. - add a few x-hacks for input/external variables that may hold custom values. - prefer `-z` and `-n` to test empty/non-empty. This also makes some x-hacks unnecessary. - optimized negated test `-z` and `-n` options. - prefer `&&` and `||` over `-a` and `-o`. For better POSIX compatibility: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html - quote variables passed to `test`, where missing. - quote string literals in comparisons. - fix some indentation, whitespace. Note that a few `case` statements also use the x-hack, which looks unnecessary. This patch does not change them. Verified by comparing feature detection results with a reference CI run from before this patch (PR #19922). Refs: https://www.shellcheck.net/wiki/SC2268 https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html https://www.vidarholen.net/contents/blog/?p=1035 https://mywiki.wooledge.org/BashPitfalls#A.5B_.24foo_.3D_.22bar.22_.5D Closes #18189 |
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| .github | ||
| CMake | ||
| docs | ||
| include | ||
| lib | ||
| LICENSES | ||
| m4 | ||
| packages | ||
| plan9 | ||
| projects | ||
| scripts | ||
| src | ||
| tests | ||
| .dir-locals.el | ||
| .editorconfig | ||
| .git-blame-ignore-revs | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| acinclude.m4 | ||
| appveyor.sh | ||
| appveyor.yml | ||
| buildconf | ||
| CHANGES.md | ||
| CMakeLists.txt | ||
| configure.ac | ||
| COPYING | ||
| curl-config.in | ||
| Dockerfile | ||
| GIT-INFO.md | ||
| libcurl.pc.in | ||
| Makefile.am | ||
| README | ||
| README.md | ||
| RELEASE-NOTES | ||
| renovate.json | ||
| REUSE.toml | ||
| SECURITY.md | ||
curl is a command-line tool for transferring data from or to a server using URLs. It supports these protocols: DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS.
Learn how to use curl by reading the man page or everything curl.
Find out how to install curl by reading the INSTALL document.
libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl man page to learn how.
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