[BUG] wrong date returned by org-read-date in table formula [9.5.2 (release_9.5.2-3-geb9f34 @ /Applications/Emacs.app/Contents/Resources/lisp/org/)]

[Steven Bagley]

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The following example, reading from "-Tue", inserts the wrong date into the 
table. Last Tuesday is not Jan 1, 2022.

| date | (0 55 17 1 1 2022 6 nil -28800) |
#+TBLFM: @1$2='(format "%s" (decode-time (org-read-date nil t "-Tue")))

However, using "-tue" (all lowercase) instead does work correctly.

The problem is that org-table-eval-formula binds case-fold-search to nil, which 
breaks the regex search near the top of org-read-date-get-relative.


Emacs  : GNU Emacs 29.0.50 (build 1, x86_64-apple-darwin21.2.0, NS 
appkit-2113.20 Version 12.1 (Build 21C52))
 of 2022-01-01
Package: Org mode version 9.5.2 (release_9.5.2-3-geb9f34 @ 
/Applications/Emacs.app/Contents/Resources/lisp/org/)