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gh-154525: Fix curses getcchar() failure on ncurses older than 6.3 - #154526
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getcchar() rejected a non-NULL opts argument before ncurses 6.3, so read the color pair through the short slot instead. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
_NCURSES_GETCCHAR_EXTENDED_PAIR was referenced in only one place; move the version condition and its comment to that call site. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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…6.3 (pythonGH-154526) getcchar() rejected a non-NULL opts argument before ncurses 6.3, so read the color pair through the short slot instead. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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getcchar() rejected a non-NULL opts argument before ncurses 6.3 (patch 20210116). curses_getcchar() passes the color pair through opts, so on ncurses 6.1 and 6.2 every wide-character cell read failed with getcchar() returned ERR, breaking complexchar, in_wch(), getbkgrnd(), and (via gh-153395) headless test_curses.
Read the pair through the short slot on older ncurses. main-only -- the opts path and complexchar are 3.16-only.