(isearch-search-fun): Move default part to the new function
`isearch-search-fun-default'.
(isearch-search-fun-function): Set the default value to
`isearch-search-fun-default'.
* lisp/comint.el (comint-history-isearch-end):
Use `isearch-search-fun-default'.
(comint-history-isearch-search): Use `isearch-search-fun-default'
and remove spacial case for `isearch-word'.
(comint-history-isearch-wrap): Remove spacial case for
`isearch-word'.
* lisp/hexl.el (hexl-isearch-search-function):
Use `isearch-search-fun-default'.
* lisp/info.el (Info-isearch-search): Use `isearch-search-fun-default'.
Use `word-search-regexp' for `isearch-word'.
* lisp/misearch.el (multi-isearch-search-fun):
Use `isearch-search-fun-default'.
* lisp/simple.el (minibuffer-history-isearch-search):
Use `isearch-search-fun-default' and remove spacial case for
`isearch-word'.
(minibuffer-history-isearch-wrap): Remove spacial case for
`isearch-word'.
* lisp/textmodes/reftex-global.el (reftex-isearch-wrap-function):
Remove spacial case for `isearch-word'.
(reftex-isearch-isearch-search): Use `isearch-search-fun-default'.
Fixes: debbugs:11381
* hexl.el (hexl-bits): New variable.
(hexl-options): Mention the variable in the doc string.
(hexl-rulerise): New function.
(hexl-line-displen): New function
(hexl-mode): Mention the new variable.
(hexl-mode, hexl-current-address, hexl-current-address): Use the
displen.
(hexl-ascii-start-column): New function.
(hexl-address-to-marker, hexl-beginning-of-line, hexl-options)
(hexl-insert-char, hexl-mode-ruler): Use the displen.
Fixes: debbugs:4941
(hexl-mode--old-var-vals): New var to replace them.
(hexl-mode--minor-mode-p, hexl-mode--setq-local): New funs.
(hexl-mode, hexl-follow-line, hexl-activate-ruler):
Use them to set local vars.
(hexl-mode-exit): Use hexl-mode--old-var-vals to restore state.
(hexl-backward-short, hexl-backward-word, hexl-scroll-down)
(hexl-scroll-up, hexl-end-of-1k-page, hexl-end-of-512b-page): Simplify.
Fixes: debbugs:7846
(hexl-mode-old-ruler-function): New variable.
(hexl-follow-line): Bind `hexl-mode-old-hl-line-range-function' and `hl-line-range-function' after `require' hl-line.
Then bind `hl-line-range-function' and `hl-line-face'.
Don't require frame. Don't use `with-no-warnings'.
(hexl-activate-ruler): Store the original value of `ruler-mode-ruler-function' to `hexl-mode-old-ruler-function'.
(hexl-mode-exit): Restore the original value of `ruler-mode-ruler-function'.
quote special chars, and make the trick work on the hex part of the
buffer as well.
(hexl-mode, hexl-save-buffer, hexl-mode-exit)
(hexl-maybe-dehexlify-buffer): Use restore-buffer-modified-p.
(hexl-ascii-region, hexl-font-lock-keywords):
(hexl-highlight-line-range): Use the term "region"
instead of "area" for consistency with the other symbols
defined in hexl.el.
Use font lock mechanism instead.
(hexl-font-lock-keywords): New font lock kewords.
(hexl-mode-old-font-lock-keywords): New variable.
(hexl-mode): Store the old font lock keywords.
(hexl-mode-exit): Restore the old font lock keywords.
