(mime-edit-content-end): Abolish unused local variable `beg'.

(mime-view-follow-current-entity): Abolish unused local variable `rc'.

(eword-encode-field): Intern down-cased field-name and use `memq'
instead of `member' to detect a field is address-list or not.

(mime-article/check-pgp-signature): Use `insert-buffer-substring'.

(mime-article/check-pgp-signature): `mime-article/show-output-buffer'
-> `mime-show-echo-buffer'.

`mime-article/show-output-buffer' -> `mime-show-echo-buffer'.

`mime/output-buffer-window-is-shared-with-bbdb' ->
`mime-echo-window-is-shared-with-bbdb'.

Variable `mime/output-buffer-window-is-shared-with-bbdb' was moved
from mime-def.el.

Variable `mime/output-buffer-window-is-shared-with-bbdb' was moved to
mime-play.el.

(mime-view-mode): `mime/output-buffer-name' ->
`mime-echo-buffer-name'.

`mime/output-buffer-name' -> `mime-echo-buffer-name'.

(mime-article/check-pgp-signature): `mime/output-buffer-name' ->
`mime-echo-buffer-name'.

(mime-echo-buffer-name): Renamed from `mime/output-buffer-name'.

(mime-edit-content-end): Abolish unused local variable `top'.

Function `mime-view-make-preview-buffer' was abolished.

`mime-view-setup-buffer' -> `mime-view-setup-buffers'.

(mime-edit-translate-single-part-tag): Add DOC-string.

`mime::preview/original-major-mode' ->
`mime-view-original-major-mode'.

`mime::preview/mother-buffer' -> `mime-mother-buffer'.

`mime::preview/article-buffer' -> `mime-raw-buffer'.

`mime::preview/article-buffer' -> `mime-raw-buffer'.

`mime::article/preview-buffer' -> `mime-view-buffer'.

Structure `mime::preview-content-info' was abolished.

(mime-view-setup-buffer): Return only `mime::article/preview-buffer'.

(mime-view-make-preview-buffer): Don't generate preview-content-list;
Return only `mime::article/preview-buffer'.

(mime-view-display-entity): Don't create `mime::preview-content-info'.

(mime-view-mode): Don't set for `mime::preview/content-list'.

(mime-combine-message/partials-automatically): Don't use
preview-content-list.

Don't require mime-partial; It is autoloaded.

`mime-article/grab-message/partials' ->
`mime-combine-message/partials-automatically'.

`mime-partial/preview-article' -> `mime-view-partial-message'.

`mime-partial/preview-article-method-alist' ->
`mime-view-partial-message-method-alist'.

(mime-view-quitting-method-for-mime-show-message-mode): Don't use
preview-content-list.

(mime-text-decoder-alist): `mime/show-message-mode' ->
`mime-show-message-mode'.

(mime-article/view-application/pgp): `mime/show-message-mode' ->
`mime-show-message-mode'.

(mime-view-follow-current-entity): New implementation.

`mime-view-follow-content' -> `mime-view-follow-current-entity'.

(mime-view-mode): Don't use preview-content-list to move to initial
point.

Function `mime-preview/cinfo-to-pcinfo' was abolished.

Function `mime-preview/point-pcinfo' was abolished.

Function `mime-preview/point-content-number' was abolished.

(mime-view-play-current-entity): New implementation.

(mime-view-quit): Use variable `mime::preview/original-major-mode'.

(mime-view-show-summary): Use variable
`mime::preview/original-major-mode'.

(mime-view-scroll-down-entity): New implementation.

(mime-view-scroll-up-entity): New implementation.

`mime-view-scroll-down-content' -> `mime-view-scroll-down-entity'.

`mime-view-scroll-up-content' -> `mime-view-scroll-up-entity'.

(mime-view-move-to-next): New implementation.

`mime-view-next-content' -> `mime-view-move-to-next'.

(mime-view-move-to-previous): New implementation.

`mime-view-previous-content' -> `mime-view-move-to-previous'.

`mime-view-up-content' -> `mime-view-move-to-upper'.

`mime/show-message-mode' -> `mime-show-message-mode'.

(mime-view-up-content): New implementation.

`mime-preview/display-content' -> `mime-view-display-entity'.

(mime-preview/display-content): Put `mime-view-raw-buffer' and
`mime-view-cinfo' as text-property.

Variable `mime-view-visible-field-regexp' was abolished.

`mime-preview/cut-header' -> `mime-view-cut-header'.

(mime-view-entity-separator-function): New implementation.

`mime-preview/default-content-separator' ->
`mime-view-entity-separator-function'.

(mime-view-header-visible-p): Abolish optional argument `ctype'.

(mime-view-entity-button-function): New implementation.

Variable `mime-view-content-button-ignored-ctype-list' was abolished.

`mime-preview/default-content-button-function' ->
`mime-view-entity-button-function'.

Variable `mime-preview/content-button-function' was abolished.

(mime-add-button): New implementation.

(mime-view-insert-entity-button): modified.

`mime-preview/insert-content-button' ->
`mime-view-insert-entity-button'.

(mime-view-header-visible-p): Don't calculate ctype is optional
argument `ctype' is not nil.

`mime-print-entity' -> `mime-view-print-current-entity'.

`mime-extract-entity' -> `mime-view-extract-current-entity'.

`mime-play-entity' -> `mime-view-play-current-entity'.

(mime-play-entity, mime-extract-entity, mime-print-entity): Add
DOC-string.

`mime-view-print-content' -> `mime-print-entity'.

`mime-view-extract-content' -> `mime-extract-entity'.

Variable `mime-view-decoding-mode' was abolished.

Variable `mime-view-decoding-mode' was moved from mime-view.el.

Variable `mime-view-decoding-mode' was moved to mime-play.el.

Use `mime-play-entity' instead of `mime-view-play-content'.

`mime-preview/decode-content' -> `mime-play-entity'.

(mime-view-play-content, mime-view-extract-content,
mime-view-print-content): Modify to use optional argument `mode'.

(mime-preview/decode-content, mime-article/decode-content): Add new
optional argument `mode'.

`mime-charset/maybe-decode-buffer' -> `mime-text-decode-buffer-maybe'.

`mime-preview/decode-text-buffer' -> `mime-decode-text-body'.

(mime-view-visible-media-type-list): Add "text/rfc822-headers".

`mime-view-default-showing-Content-Type-list' ->
`mime-view-visible-media-type-list'.

`mime-raw::text-decoder' -> `mime-text-decoder'.

(mime-article/view-application/pgp): `mime-charset/decode-buffer' ->
`mime-text-decode-buffer'.

`mime-charset/decode-buffer' -> `mime-text-decode-buffer'.

(mime-article/view-application/pgp): `mime-raw::text-decoder' ->
`mime-text-decoder'.

`mime-raw::text-decoder' -> `mime-text-decoder'.

Variable `mime-raw::text-decoder' was moved from mime-view.el.

Variable `mime-raw::text-decoder' was moved to mime-text.el.

(mime-article/view-application/pgp): Use `insert-buffer-substring'.

(mime-article/view-application/pgp): `mime::article/code-converter' ->
`mime-raw::text-decoder'.

(mime-article/view-message/rfc822): `mime::article/code-converter' ->
`mime-raw::text-decoder'.

(mime-preview/decode-text-buffer): `mime::article/code-converter' ->
`mime-raw::text-decoder'.

`mime::article/code-converter' -> `mime-raw::text-decoder'.

(mime-article/add-pgp-keys): Abolish unused local variables `charset'
and `mime::article/preview-buffer'.

(mime-article/add-pgp-keys): Abolish unused local variable `mode'.

(mime-preview/filter-for-image): Abolish unused local variable
`charset'.

(mime-article/check-pgp-signature): Abolish unused local variable
`status'.

(mime-article/view-application/pgp, mime-article/add-pgp-keys):
Abolish unused local variable `cur-buf'.