curl: named globs in output file name for upload glob references

[bagder]

Use parts of text from the upload filename field when that uses globbing
by giving it a name the same way we do it for URL globs. For example, if
you upload three files to a HTTP URL and want to save the corresponding
responses in separate files:

curl -T 'file{<num>1,2,3}' https://upload.example/ -o 'response-#<num>'

Verified by test 2014

[Copilot]

Pull request overview

Adds support in the curl tool for using named glob parts from --upload-file (upload-file globbing) when expanding --output filenames (via #<name>), similar to existing named URL glob support. This enables generating per-upload response filenames even when the URL itself is not globbed.

Changes:

• Extend glob_match_url() to optionally resolve named #<...> references from a second glob set (upload-file glob).
• Update output filename setup to consider upload-file glob usage in addition to URL glob usage.
• Add test coverage (test2014) and document the new capability in --upload-file and --output docs.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
tests/data/test2014	New regression test verifying --output can reference a named glob from --upload-file.
tests/data/Makefile.am	Registers the new test case.
src/tool_urlglob.h	Updates glob_match_url() signature to accept a second glob pointer.
src/tool_urlglob.c	Implements lookup of named glob references in the second glob list.
src/tool_operate.c	Wires upload-file glob into output filename glob expansion.
docs/cmdline-opts/upload-file.md	Documents referencing named upload-file globs in --output.
docs/cmdline-opts/output.md	Documents referencing named upload-file globs in output templates.

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[bagder]

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[augmentcode]

🤖 Augment PR Summary

Summary: This PR extends curl’s output filename glob substitution so that parts of a globbed upload filename can be referenced (via named globs) when using -o/--output.

Changes:

• Documented named glob usage and added examples showing --upload-file/-T globs driving --output naming.
• Updated setup_outfile() to expand output templates when either URL globbing or upload-file globbing is active.
• Extended glob_match_url() to optionally look up named glob references in a second URLGlob (upload glob) when not found in the URL glob.
• Updated the public declaration in tool_urlglob.h to match the new function signature.
• Added regression test test2014 and wired it into the test list.

Testing: Verified by new test 2014 (upload with glob; output name based on upload glob).

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