René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Build fails with recent libedit versions","articleBody":"# Bug report\n\n### Bug description:\n\n`readline_set_completion_display_matches_hook_impl` will use either `VFunction` (if `_RL_FUNCTION_TYPEDEF` is defined) or `rl_compdisp_func_t`. The former is deprecated but available in current readline, while the latter has historically not been available in libedit. However, libedit recently added `rl_compdisp_func_t` and removed `VFunction` entirely: http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libedit/readline/readline.h.diff?r1=1.53\u0026r2=1.54\u0026sortby=date\n\nWe ship a recent libedit in MacPorts, so we see a compilation failure like this:\n```\n./Modules/readline.c:448:10: error: use of undeclared identifier 'VFunction'; did you mean 'function'?\n        (VFunction *)on_completion_display_matches_hook : 0;\n         ^~~~~~~~~\n```\n\nIt's easy enough for us to patch around this, but I guess if compatibility with both current libedit and the older version shipped by Apple is desired, there needs to be another check for the availability of this type.\n\n### CPython versions tested on:\n\n3.12\n\n### Operating systems tested on:\n\nmacOS\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-110239\n* gh-110562\n* gh-110575\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/jmroot","@type":"Person","name":"jmroot"},"datePublished":"2023-09-09T15:41:09.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/109191/cpython/issues/109191"}