* test/lisp/minibuffer-tests.el (completing-read-with-minibuffer-setup):
New macro based on xdisp-tests--in-minibuffer.
(completion-auto-help-test, completion-auto-select-test)
(completion-auto-wrap-test, completions-header-format-test)
(completions-affixation-navigation-test): New tests.

* lisp/eshell/esh-cmd.el (eshell-subcommand-bindings)
(eshell-command-to-value): Set 'eshell-in-pipeline-p' to nil.

* test/lisp/eshell/eshell-tests.el
(eshell-test/subcommand-reset-in-pipeline)
(eshell-test/lisp-reset-in-pipeline): New tests (bug#55620).

* test/lisp/erc/erc-dcc-tests.el
(erc-dcc-tests--dcc-handle-ctcp-send): Shadow hook to prevent the
erc-button module from interfering with tests that use this helper.

* test/src/comp-tests.el (comp-deftest): Ensure that no files are left
behind (bug#55611).

* test/src/buffer-tests.el (test-restore-buffer-modified-p): Clean
up autosave file in /tmp.

* lisp/eshell/esh-cmd.el (eshell-execute-pipeline): Use 'make-symbol'
for headproc and tailproc.
(eshell-do-pipelines, eshell-do-pipelines-synchronously): Adapt to the
above.

* test/lisp/eshell/eshell-tests.el (eshell-test/pipe-subcommand)
(eshell-test/pipe-subcommand-with-pipe): New test.

* doc/misc/eshell.texi (Bugs and ideas): Remove item about piping to
process from loop; this commit fixes it (bug#55590).

* test/manual/etags/el-src/emacs/lisp/progmodes/etags.el
(tags-apropos-additional-actions):
* lisp/window.el (delete-window-choose-selected):
* lisp/vc/ediff-merg.el (ediff-combination-pattern):
* lisp/vc/diff.el (diff-no-select):
* lisp/tab-bar.el (tab-bar-new-tab-choice):
* lisp/simple.el (next-error-message-highlight):
(backward-delete-char-untabify):
* lisp/ses.el (ses-jump-cell-name-function):
* lisp/org/org.el (org-latex-to-html-convert-command):
* lisp/org/org-agenda.el (org-agenda-sorting-strategy):
* lisp/net/tramp.el (tramp-default-file-modes):
* lisp/net/newst-treeview.el
(newsticker-treeview-use-feed-name-from-url-list-in-treeview):
* lisp/net/eww.el (eww-auto-rename-buffer):
* lisp/mwheel.el (mouse-wheel-scroll-amount):
* lisp/mail/rmail.el (rmail-re-abbrevs):
* lisp/info.el (Info-history-forward-menu):
* lisp/gnus/nnselect.el (nnselect-retrieve-headers-override-function):
* lisp/gnus/gnus-start.el (gnus-subscribe-hierarchical-interactive):
* lisp/fringe.el (fboundp):
* lisp/eshell/esh-var.el (eshell-variable-aliases-list):
* lisp/emacs-lisp/checkdoc.el (checkdoc-column-zero-backslash-before-paren):
* lisp/dired-aux.el (dired-confirm-shell-command):
* lisp/calendar/calendar.el (calendar-time-zone-style):
* lisp/ansi-color.el (ansi-color-faces-vector):
(ansi-color-names-vector): Audit use of various single quotes in
Lisp doc strings.

* test/manual/etags/c-src/emacs/src/keyboard.c (Frecursive_edit):
* src/xfns.c (syms_of_xfns):
* src/xdisp.c (Fwindow_text_pixel_size):
(syms_of_xdisp):
* src/w32notify.c (Fw32notify_add_watch):
(Fw32notify_add_watch):
* src/frame.c (Fframe_child_frame_border_width):
* src/comp.c (Fcomp__subr_signature):
* src/alloc.c (Fgarbage_collect):
* lib-src/make-docfile.c (scan_c_stream): Audit quoting symbols in C
doc strings.

When printing a circular list and `print-circle` is nil, use a
somewhat more meaningful ". #N" tail index.  The previous method for
calculating that index was based on Floyd circularity detection being
used so it had been broken ever since the change to Brent's algorithm.

The new index is correct with respect to the start of the list itself
which is what it used to be before being completely broken.
It does not take into account the nesting depth of the list context.

* src/print.c (struct print_stack_entry, print_object):
Keep track of the tortoise index (which is cheap) instead of trying
to derive it from the printed element index.
* test/src/print-tests.el (print-test-rho, print-circular):
New test.