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master fa6d565: Merge from origin/emacs-27


From: Glenn Morris
Subject: master fa6d565: Merge from origin/emacs-27
Date: Sun, 7 Jun 2020 12:04:09 -0400 (EDT)

branch: master
commit fa6d56529f9ebaedaf62ecbf8887ffecca7dce12
Merge: 6cb557e 35661ef
Author: Glenn Morris <rgm@gnu.org>
Commit: Glenn Morris <rgm@gnu.org>

    Merge from origin/emacs-27
    
    35661ef943 (origin/emacs-27) Fix typo in "(elisp) Type Keywords"
    1af0e95fec Gnus nnir-summary-line-format has no effect
    dd366b5d3b Improve documentation of 'window-text-pixel-size'
    fbd49f969e * src/xdisp.c (Fwindow_text_pixel_size): Doc fix.  (Bug#41...
    d8593fd19f Minor improvements to EDE and EIEIO manuals
    3916e63f9e Have Fido mode also imitate Ido mode in ignore-case options
    cc35b197c7 Update package-menu-quick-help
    bf09106256 Improve documentation of 'sort-subr'
    73749efa13 Update Ukrainian transliteration
    30a7ee505a Fix Arabic shaping when eww/shr fill the text to be rendered
    7d323f07c0 Silence some byte-compiler warnings in tests
    cf473e742f * test/lisp/battery-tests.el: New file.
    b07e3b1d97 Improve format-spec documentation (bug#41571)
    
    # Conflicts:
    #   test/lisp/emacs-lisp/package-tests.el
---
 doc/lispref/customize.texi               |   2 +-
 doc/lispref/display.texi                 |  55 ++++++----
 doc/lispref/strings.texi                 | 176 +++++++++++++++++++++++++++++++
 doc/lispref/text.texi                    |  75 ++-----------
 doc/misc/ede.texi                        |  10 +-
 doc/misc/eieio.texi                      |  17 ++-
 lisp/emacs-lisp/package.el               |   7 +-
 lisp/format-spec.el                      |  49 +++++----
 lisp/gnus/nnir.el                        |   9 +-
 lisp/icomplete.el                        |   5 +-
 lisp/language/cyril-util.el              |   6 +-
 src/hbfont.c                             |   7 +-
 src/xdisp.c                              |  60 ++++++-----
 test/lisp/battery-tests.el               |  58 ++++++++++
 test/lisp/emacs-lisp/cl-generic-tests.el |   8 +-
 test/lisp/emacs-lisp/package-tests.el    |   5 +
 test/lisp/eshell/eshell-tests.el         |   1 +
 test/lisp/image/exif-tests.el            |   5 +-
 test/lisp/international/ccl-tests.el     |   3 +
 test/lisp/mail/footnote-tests.el         |   6 +-
 test/lisp/progmodes/elisp-mode-tests.el  |  11 +-
 test/lisp/progmodes/sql-tests.el         |   2 +-
 test/lisp/simple-tests.el                |   3 +-
 test/lisp/wdired-tests.el                |   2 +
 test/src/buffer-tests.el                 |   1 +
 test/src/data-tests.el                   |   6 +-
 26 files changed, 417 insertions(+), 172 deletions(-)

diff --git a/doc/lispref/customize.texi b/doc/lispref/customize.texi
index 172809b..2a72276 100644
--- a/doc/lispref/customize.texi
+++ b/doc/lispref/customize.texi
@@ -1156,7 +1156,7 @@ in that value.
 
 The usual reason to specify a documentation string for a type is to
 provide more information about the meanings of alternatives inside a
-@code{:choice} type or the parts of some other composite type.
+@code{choice} type or the parts of some other composite type.
 
 @item :help-echo @var{motion-doc}
 @kindex help-echo@r{, customization keyword}
diff --git a/doc/lispref/display.texi b/doc/lispref/display.texi
index 3d738b9..6fff199 100644
--- a/doc/lispref/display.texi
+++ b/doc/lispref/display.texi
@@ -2017,36 +2017,45 @@ it contains.
 
 @defun window-text-pixel-size &optional window from to x-limit y-limit 
mode-and-header-line
 This function returns the size of the text of @var{window}'s buffer in
-pixels.  @var{window} must be a live window and defaults to the selected
-one.  The return value is a cons of the maximum pixel-width of any text
-line and the maximum pixel-height of all text lines.
-
-The optional argument @var{from}, if non-@code{nil}, specifies the first
-text position to consider and defaults to the minimum accessible
-position of the buffer.  If @var{from} is @code{t}, it uses the minimum
-accessible position that is not a newline character.  The optional
-argument @var{to}, if non-@code{nil}, specifies the last text position
-to consider and defaults to the maximum accessible position of the
-buffer.  If @var{to} is @code{t}, it uses the maximum accessible
-position that is not a newline character.
+pixels.  @var{window} must be a live window and defaults to the
+selected one.  The return value is a cons of the maximum pixel-width
+of any text line and the maximum pixel-height of all text lines.  This
+function exists to allow Lisp programs to adjust the dimensions of
+@var{window} to the buffer text it needs to display.
+
+The optional argument @var{from}, if non-@code{nil}, specifies the
+first text position to consider, and defaults to the minimum
+accessible position of the buffer.  If @var{from} is @code{t}, it
+stands for the minimum accessible position that is not a newline
+character.  The optional argument @var{to}, if non-@code{nil},
+specifies the last text position to consider, and defaults to the
+maximum accessible position of the buffer.  If @var{to} is @code{t},
+it stands for the maximum accessible position that is not a newline
+character.
 
 The optional argument @var{x-limit}, if non-@code{nil}, specifies the
-maximum pixel-width that can be returned.  @var{x-limit} @code{nil} or
-omitted, means to use the pixel-width of @var{window}'s body
-(@pxref{Window Sizes}); this is useful when the caller does not intend
-to change the width of @var{window}.  Otherwise, the caller should
-specify here the maximum width @var{window}'s body may assume.  Text
-whose x-coordinate is beyond @var{x-limit} is ignored.  Since
+maximum X coordinate beyond which text should be ignored; it is
+therefore also the largest value of pixel-width that the function can
+return.  If @var{x-limit} @code{nil} or omitted, it means to use the
+pixel-width of @var{window}'s body (@pxref{Window Sizes}); this
+default means that text of truncated lines wider than the window will
+be ignored.  This default is useful when the caller does not intend to
+change the width of @var{window}.  Otherwise, the caller should
+specify here the maximum width @var{window}'s body may assume; in
+particular, if truncated lines are expected and their text needs to be
+accounted for, @var{x-limit} should be set to a large value.  Since
 calculating the width of long lines can take some time, it's always a
 good idea to make this argument as small as needed; in particular, if
 the buffer might contain long lines that will be truncated anyway.
 
 The optional argument @var{y-limit}, if non-@code{nil}, specifies the
-maximum pixel-height that can be returned.  Text lines whose
-y-coordinate is beyond @var{y-limit} are ignored.  Since calculating the
-pixel-height of a large buffer can take some time, it makes sense to
-specify this argument; in particular, if the caller does not know the
-size of the buffer.
+maximum Y coordinate beyond which text is to be ignored; it is
+therefore also the maximum pixel-height that the function can return.
+If @var{y-limit} is nil or omitted, it means to considers all the
+lines of text till the buffer position specified by @var{to}.  Since
+calculating the pixel-height of a large buffer can take some time, it
+makes sense to specify this argument; in particular, if the caller
+does not know the size of the buffer.
 
 The optional argument @var{mode-and-header-line} @code{nil} or omitted
 means to not include the height of the mode- or header-line of
diff --git a/doc/lispref/strings.texi b/doc/lispref/strings.texi
index 70c3b3c..4a7bda5 100644
--- a/doc/lispref/strings.texi
+++ b/doc/lispref/strings.texi
@@ -28,6 +28,7 @@ keyboard character events.
 * Text Comparison::           Comparing characters or strings.
 * String Conversion::         Converting to and from characters and strings.
 * Formatting Strings::        @code{format}: Emacs's analogue of @code{printf}.
+* Custom Format Strings::     Formatting custom @code{format} specifications.
 * Case Conversion::           Case conversion functions.
 * Case Tables::               Customizing case conversion.
 @end menu
@@ -1122,6 +1123,181 @@ may be problematic; for example, @samp{%d} and 
@samp{%g} can mishandle
 NaNs and can lose precision and type, and @samp{#x%x} and @samp{#o%o}
 can mishandle negative integers.  @xref{Input Functions}.
 
+The functions described in this section accept a fixed set of
+specification characters.  The next section describes a function
+@code{format-spec} which can accept custom specification characters,
+such as @samp{%a} or @samp{%z}.
+
+@node Custom Format Strings
+@section Custom Format Strings
+@cindex custom format string
+@cindex custom @samp{%}-sequence in format
+
+Sometimes it is useful to allow users and Lisp programs alike to
+control how certain text is generated via custom format control
+strings.  For example, a format string could control how to display
+someone's forename, surname, and email address.  Using the function
+@code{format} described in the previous section, the format string
+could be something like @w{@code{"%s %s <%s>"}}.  This approach
+quickly becomes impractical, however, as it can be unclear which
+specification character corresponds to which piece of information.
+
+A more convenient format string for such cases would be something like
+@w{@code{"%f %l <%e>"}}, where each specification character carries
+more semantic information and can easily be rearranged relative to
+other specification characters, making such format strings more easily
+customizable by the user.
+
+The function @code{format-spec} described in this section performs a
+similar function to @code{format}, except it operates on format
+control strings that use arbitrary specification characters.
+
+@defun format-spec template spec-alist &optional only-present
+This function returns a string produced from the format string
+@var{template} according to conversions specified in @var{spec-alist},
+which is an alist (@pxref{Association Lists}) of the form
+@w{@code{(@var{letter} . @var{replacement})}}.  Each specification
+@code{%@var{letter}} in @var{template} will be replaced by
+@var{replacement} when formatting the resulting string.
+
+The characters in @var{template}, other than the format
+specifications, are copied directly into the output, including their
+text properties, if any.  Any text properties of the format
+specifications are copied to their replacements.
+
+Using an alist to specify conversions gives rise to some useful
+properties:
+
+@itemize @bullet
+@item
+If @var{spec-alist} contains more unique @var{letter} keys than there
+are unique specification characters in @var{template}, the unused keys
+are simply ignored.
+@item
+If @var{spec-alist} contains more than one association with the same
+@var{letter}, the closest one to the start of the list is used.
+@item
+If @var{template} contains the same specification character more than
+once, then the same @var{replacement} found in @var{spec-alist} is
+used as a basis for all of that character's substitutions.
+@item
+The order of specifications in @var{template} need not correspond to
+the order of associations in @var{spec-alist}.
+@end itemize
+
+The optional argument @var{only-present} indicates how to handle
+specification characters in @var{template} that are not found in
+@var{spec-alist}.  If it is @code{nil} or omitted, the function
+signals an error.  Otherwise, those format specifications and any
+occurrences of @samp{%%} in @var{template} are left verbatim in the
+output, including their text properties, if any.
+@end defun
+
+The syntax of format specifications accepted by @code{format-spec} is
+similar, but not identical, to that accepted by @code{format}.  In
+both cases, a format specification is a sequence of characters
+beginning with @samp{%} and ending with an alphabetic letter such as
+@samp{s}.
+
+Unlike @code{format}, which assigns specific meanings to a fixed set
+of specification characters, @code{format-spec} accepts arbitrary
+specification characters and treats them all equally.  For example:
+
+@example
+@group
+(setq my-site-info
+      (list (cons ?s system-name)
+            (cons ?t (symbol-name system-type))
+            (cons ?c system-configuration)
+            (cons ?v emacs-version)
+            (cons ?e invocation-name)
+            (cons ?p (number-to-string (emacs-pid)))
+            (cons ?a user-mail-address)
+            (cons ?n user-full-name)))
+
+(format-spec "%e %v (%c)" my-site-info)
+     @result{} "emacs 27.1 (x86_64-pc-linux-gnu)"
+
+(format-spec "%n <%a>" my-site-info)
+     @result{} "Emacs Developers <emacs-devel@@gnu.org>"
+@end group
+@end example
+
+A format specification can include any number of the following flag
+characters immediately after the @samp{%} to modify aspects of the
+substitution.
+
+@table @samp
+@item 0
+This flag causes any padding specified by the width to consist of
+@samp{0} characters instead of spaces.
+
+@item -
+This flag causes any padding specified by the width to be inserted on
+the right rather than the left.
+
+@item <
+This flag causes the substitution to be truncated on the left to the
+given width, if specified.
+
+@item >
+This flag causes the substitution to be truncated on the right to the
+given width, if specified.
+
+@item ^
+This flag converts the substituted text to upper case (@pxref{Case
+Conversion}).
+
+@item _
+This flag converts the substituted text to lower case (@pxref{Case
+Conversion}).
+@end table
+
+The result of using contradictory flags (for instance, both upper and
+lower case) is undefined.
+
+As is the case with @code{format}, a format specification can include
+a width, which is a decimal number that appears after any flags.  If a
+substitution contains fewer characters than its specified width, it is
+padded on the left:
+
+@example
+@group
+(format-spec "%8a is padded on the left with spaces"
+             '((?a . "alpha")))
+     @result{} "   alpha is padded on the left with spaces"
+@end group
+@end example
+
+Here is a more complicated example that combines several
+aforementioned features:
+
+@example
+@group
+(setq my-battery-info
+      (list (cons ?p "73")      ; Percentage
+            (cons ?L "Battery") ; Status
+            (cons ?t "2:23")    ; Remaining time
+            (cons ?c "24330")   ; Capacity
+            (cons ?r "10.6")))  ; Rate of discharge
+
+(format-spec "%>^-3L : %3p%% (%05t left)" my-battery-info)
+     @result{} "BAT :  73% (02:23 left)"
+
+(format-spec "%>^-3L : %3p%% (%05t left)"
+             (cons (cons ?L "AC")
+                   my-battery-info))
+     @result{} "AC  :  73% (02:23 left)"
+@end group
+@end example
+
+As the examples in this section illustrate, @code{format-spec} is
+often used for selectively formatting an assortment of different
+pieces of information.  This is useful in programs that provide
+user-customizable format strings, as the user can choose to format
+with a regular syntax and in any desired order only a subset of the
+information that the program makes available.
+
 @node Case Conversion
 @section Case Conversion in Lisp
 @cindex upper case
diff --git a/doc/lispref/text.texi b/doc/lispref/text.texi
index 7c4bed0..d765c95 100644
--- a/doc/lispref/text.texi
+++ b/doc/lispref/text.texi
@@ -58,7 +58,6 @@ the character after point.
                        of another buffer.
 * Decompression::    Dealing with compressed data.
 * Base 64::          Conversion to or from base 64 encoding.
-* Interpolated Strings:: Formatting Customizable Strings.
 * Checksum/Hash::    Computing cryptographic hashes.
 * GnuTLS Cryptography:: Cryptographic algorithms imported from GnuTLS.
 * Parsing HTML/XML:: Parsing HTML and XML.
@@ -2029,8 +2028,15 @@ non-@code{nil} value.
 @end enumerate
 
 The argument @var{predicate} is the function to use to compare keys.
-If keys are numbers, it defaults to @code{<}; otherwise it defaults to
-@code{string<}.
+It is called with two arguments, the keys to compare, and should
+return non-@code{nil} if the first key should come before the second
+in the sorting order.  What exactly are the key arguments depends on
+what @var{startkeyfun} and @var{endkeyfun} return.  If @var{predicate}
+is omitted or @code{nil}, it defaults to @code{<} if the keys are
+numbers, to @code{compare-buffer-substrings} if the keys are cons
+cells (whose @code{car} and @code{cdr} are start and end buffer
+positions of the key), and to @code{string<} otherwise (with keys
+assumed to be strings).
 
 As an example of @code{sort-subr}, here is the complete function
 definition for @code{sort-lines}:
@@ -4662,69 +4668,6 @@ If optional argument @var{base64url} is non-@code{nil}, 
then padding
 is optional, and the URL variant of base 64 encoding is used.
 @end defun
 
-
-@node Interpolated Strings
-@section Formatting Customizable Strings
-
-It is, in some circumstances, useful to present users with a string to
-be customized that can then be expanded programmatically.  For
-instance, @code{erc-header-line-format} is @code{"%n on %t (%m,%l)
-%o"}, and each of those characters after the percent signs are
-expanded when the header line is computed.  To do this, the
-@code{format-spec} function is used:
-
-@defun format-spec format specification &optional only-present
-@var{format} is the format specification string as in the example
-above.  @var{specification} is an alist that has elements where the
-@code{car} is a character and the @code{cdr} is the substitution.
-
-If @var{only-present} is @code{nil}, errors will be signaled if a
-format character has been used that's not present in
-@var{specification}.  If it's non-@code{nil}, that format
-specification is left verbatim in the result.
-@end defun
-
-Here's a trivial example:
-
-@example
-(format-spec "su - %u %l"
-             `((?u . ,(user-login-name))
-               (?l . "ls")))
-     @result{} "su - foo ls"
-@end example
-
-In addition to allowing padding/limiting to a certain length, the
-following modifiers can be used:
-
-@table @asis
-@item @samp{0}
-Pad with zeros instead of the default spaces.
-
-@item @samp{-}
-Pad to the right.
-
-@item @samp{^}
-Use upper case.
-
-@item @samp{_}
-Use lower case.
-
-@item @samp{<}
-If the length needs to be limited, remove characters from the left.
-
-@item @samp{>}
-Same as previous, but remove characters from the right.
-@end table
-
-If contradictory modifiers are used (for instance, both upper and
-lower case), then what happens is undefined.
-
-As an example, @samp{"%<010b"} means ``insert the @samp{b} expansion,
-but pad with leading zeros if it's less than ten characters, and if
-it's more than ten characters, shorten by removing characters from the
-left.''
-
-
 @node Checksum/Hash
 @section Checksum/Hash
 @cindex MD5 checksum
diff --git a/doc/misc/ede.texi b/doc/misc/ede.texi
index 584b0d7..4121769 100644
--- a/doc/misc/ede.texi
+++ b/doc/misc/ede.texi
@@ -955,18 +955,16 @@ The example for Makefiles looks like this:
 ;;; MAKEFILE
 
 (defclass ede-generic-makefile-project (ede-generic-project)
-  ((buildfile :initform "Makefile")
-   )
+  ((buildfile :initform "Makefile"))
   "Generic Project for makefiles.")
 
 (defmethod ede-generic-setup-configuration ((proj 
ede-generic-makefile-project) config)
-  "Setup a configuration for Make."
+  "Set up a configuration for Make."
   (oset config build-command "make -k")
-  (oset config debug-command "gdb ")
-  )
+  (oset config debug-command "gdb "))
 
 (ede-generic-new-autoloader "generic-makefile" "Make"
-                           "Makefile" 'ede-generic-makefile-project)
+                            "Makefile" 'ede-generic-makefile-project)
 @end example
 
 This example project will detect any directory with the file
diff --git a/doc/misc/eieio.texi b/doc/misc/eieio.texi
index 6e7d438..8dd394c 100644
--- a/doc/misc/eieio.texi
+++ b/doc/misc/eieio.texi
@@ -744,14 +744,21 @@ slot values, and use the previously mentioned set/ref 
routines.
 @anchor{slot-value}
 This function retrieves the value of @var{slot} from @var{object}.
 Unlike @code{oref}, the symbol for @var{slot} must be quoted.
+
+This is a generalized variable that can be used with @code{setf} to
+modify the value stored in @var{slot}.  @xref{Generalized
+Variables,,,elisp,GNU Emacs Lisp Reference Manual}.
 @end defun
 
 @defun set-slot-value object slot value
 @anchor{set-slot-value}
-This is not a CLOS function, but is the setter for @code{slot-value}
-used by the @code{setf} macro.  This
-function sets the value of @var{slot} from @var{object}.  Unlike
+This function sets the value of @var{slot} from @var{object}.  Unlike
 @code{oset}, the symbol for @var{slot} must be quoted.
+
+This is not a CLOS function, but is the obsolete setter for
+@code{slot-value} used by the @code{setf} macro.  It is therefore
+recommended to use @w{@code{(setf (slot-value @var{object} @var{slot})
+@var{value})}} instead.
 @end defun
 
 @defun slot-makeunbound object slot
@@ -1072,7 +1079,7 @@ Return a string of the form @samp{#<object-class 
myobjname>} for @var{obj}.
 This should look like Lisp symbols from other parts of Emacs such as
 buffers and processes, and is shorter and cleaner than printing the
 object's record.  It is more useful to use @code{object-print} to get
-and object's print form, as this allows the object to add extra display
+an object's print form, as this allows the object to add extra display
 information into the symbol.
 @end defun
 
@@ -1227,7 +1234,7 @@ objects on top of records, and thus everything is 
technically visible,
 some functions have been provided.  None of these functions are a part
 of CLOS.
 
-@defun object-slots obj
+@defun eieio-class-slots obj
 Return the list of public slots for @var{obj}.
 @end defun
 
diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
index 6298244..6fc8059 100644
--- a/lisp/emacs-lisp/package.el
+++ b/lisp/emacs-lisp/package.el
@@ -3302,7 +3302,7 @@ If optional arg BUTTON is non-nil, describe its 
associated package."
   '(("install," "delete," "unmark," ("execute" . 1))
     ("next," "previous")
     ("Hide-package," "(-toggle-hidden")
-    ("refresh-contents," "g-redisplay," "filter," "help")))
+    ("g-refresh-contents," "/-filter," "help")))
 
 (defun package--prettify-quick-help-key (desc)
   "Prettify DESC to be displayed as a help menu."
@@ -3310,7 +3310,7 @@ If optional arg BUTTON is non-nil, describe its 
associated package."
       (if (listp (cdr desc))
           (mapconcat #'package--prettify-quick-help-key desc "   ")
         (let ((place (cdr desc))
-              (out (car desc)))
+              (out (copy-sequence (car desc))))
           (add-text-properties place (1+ place)
                                '(face (bold font-lock-warning-face))
                                out)
@@ -3790,6 +3790,9 @@ packages."
                         (package--has-keyword-p pkg-desc keyword))
                       (concat "keyword:" (string-join keyword ",")))))
 
+(define-obsolete-function-alias
+  'package-menu-filter #'package-menu-filter-by-keyword "27.1")
+
 (defun package-menu-filter-by-name (name)
   "Filter the \"*Packages*\" buffer by NAME regexp.
 Display only packages with name that matches regexp NAME.
diff --git a/lisp/format-spec.el b/lisp/format-spec.el
index f418cea..9278bd7 100644
--- a/lisp/format-spec.el
+++ b/lisp/format-spec.el
@@ -29,35 +29,46 @@
 
 (defun format-spec (format specification &optional only-present)
   "Return a string based on FORMAT and SPECIFICATION.
-FORMAT is a string containing `format'-like specs like \"su - %u %k\",
-while SPECIFICATION is an alist mapping from format spec characters
-to values.
+FORMAT is a string containing `format'-like specs like \"su - %u %k\".
+SPECIFICATION is an alist mapping format specification characters
+to their substitutions.
 
 For instance:
 
   (format-spec \"su - %u %l\"
-               `((?u . ,(user-login-name))
+               \\=`((?u . ,(user-login-name))
                  (?l . \"ls\")))
 
-Each format spec can have modifiers, where \"%<010b\" means \"if
-the expansion is shorter than ten characters, zero-pad it, and if
-it's longer, chop off characters from the left side\".
+Each %-spec may contain optional flag and width modifiers, as
+follows:
 
-The following modifiers are allowed:
+  %<flags><width>character
 
-* 0: Use zero-padding.
-* -: Pad to the right.
-* ^: Upper-case the expansion.
-* _: Lower-case the expansion.
-* <: Limit the length by removing chars from the left.
-* >: Limit the length by removing chars from the right.
+The following flags are allowed:
 
-Any text properties on a %-spec itself are propagated to the text
-that it generates.
+* 0: Pad to the width, if given, with zeros instead of spaces.
+* -: Pad to the width, if given, on the right instead of the left.
+* <: Truncate to the width, if given, on the left.
+* >: Truncate to the width, if given, on the right.
+* ^: Convert to upper case.
+* _: Convert to lower case.
 
-If ONLY-PRESENT, format spec characters not present in
-SPECIFICATION are ignored, and the \"%\" characters are left
-where they are, including \"%%\" strings."
+The width modifier behaves like the corresponding one in `format'
+when applied to %s.
+
+For example, \"%<010b\" means \"substitute into the output the
+value associated with ?b in SPECIFICATION, either padding it with
+leading zeros or truncating leading characters until it's ten
+characters wide\".
+
+Any text properties of FORMAT are copied to the result, with any
+text properties of a %-spec itself copied to its substitution.
+
+ONLY-PRESENT indicates how to handle %-spec characters not
+present in SPECIFICATION.  If it is nil or omitted, emit an
+error; otherwise leave those %-specs and any occurrences of
+\"%%\" in FORMAT verbatim in the result, including their text
+properties, if any."
   (with-temp-buffer
     (insert format)
     (goto-char (point-min))
diff --git a/lisp/gnus/nnir.el b/lisp/gnus/nnir.el
index 0277524..722969c 100644
--- a/lisp/gnus/nnir.el
+++ b/lisp/gnus/nnir.el
@@ -663,7 +663,7 @@ A non-nil `specs' arg must be an alist with 
`nnir-query-spec' and
   (let ((backend (car (gnus-server-to-method server))))
     (if backend
        (nnoo-change-server backend server definitions)
-      (add-hook 'gnus-summary-prepared-hook 'nnir-mode)
+      (add-hook 'gnus-summary-generate-hook 'nnir-mode)
       (nnoo-change-server 'nnir server definitions))))
 
 (deffoo nnir-request-group (group &optional server dont-check _info)
@@ -1850,8 +1850,11 @@ is also searched."
 
 (defun nnir-mode ()
   (when (eq (car (gnus-find-method-for-group gnus-newsgroup-name)) 'nnir)
-    (setq gnus-summary-line-format
-         (or nnir-summary-line-format gnus-summary-line-format))
+    (when (and nnir-summary-line-format
+               (not (string= nnir-summary-line-format
+                             gnus-summary-line-format)))
+      (setq gnus-summary-line-format nnir-summary-line-format)
+      (gnus-update-format-specifications nil 'summary))
     (when (bound-and-true-p gnus-registry-enabled)
       (remove-hook 'gnus-summary-article-delete-hook 'gnus-registry-action t)
       (remove-hook 'gnus-summary-article-move-hook 'gnus-registry-action t)
diff --git a/lisp/icomplete.el b/lisp/icomplete.el
index c12f390..60ef024 100644
--- a/lisp/icomplete.el
+++ b/lisp/icomplete.el
@@ -330,7 +330,10 @@ if that doesn't produce a completion match."
                 icomplete-hide-common-prefix nil
                 completion-styles '(flex)
                 completion-flex-nospace nil
-                completion-category-defaults nil)))
+                completion-category-defaults nil
+                completion-ignore-case t
+                read-buffer-completion-ignore-case t
+                read-file-name-completion-ignore-case t)))
 
 ;;;###autoload
 (define-minor-mode fido-mode
diff --git a/lisp/language/cyril-util.el b/lisp/language/cyril-util.el
index e7a1267..a3a6f3f 100644
--- a/lisp/language/cyril-util.el
+++ b/lisp/language/cyril-util.el
@@ -152,6 +152,7 @@ If the argument is nil, we return the display table to its 
standard state."
     (aset standard-display-table ?љ  [?l ?j])
     (aset standard-display-table ?њ  [?n ?j])
     (aset standard-display-table ?џ  [?d ?z])
+    (aset standard-display-table ?ґ  [?g])
 
     (aset standard-display-table ?Є  [?Y ?e])
     (aset standard-display-table ?Ї  [?Y ?i])
@@ -166,6 +167,7 @@ If the argument is nil, we return the display table to its 
standard state."
     (aset standard-display-table ?Љ  [?L ?j])
     (aset standard-display-table ?Њ  [?N ?j])
     (aset standard-display-table ?Џ  [?D ?j])
+    (aset standard-display-table ?Ґ  [?G])
 
     (when (equal cyrillic-language "Bulgarian")
       (aset standard-display-table ?щ [?s ?h ?t])
@@ -182,7 +184,9 @@ If the argument is nil, we return the display table to its 
standard state."
       (aset standard-display-table ?й [?i])
       (aset standard-display-table ?Й [?Y])
       (aset standard-display-table ?ю [?i ?u])
-      (aset standard-display-table ?я [?i ?a]))))
+      (aset standard-display-table ?я [?i ?a])
+      (aset standard-display-table ?г [?h])
+      (aset standard-display-table ?Г [?H]))))
 
 ;;
 (provide 'cyril-util)
diff --git a/src/hbfont.c b/src/hbfont.c
index 576c5fe..4b3f64e 100644
--- a/src/hbfont.c
+++ b/src/hbfont.c
@@ -26,6 +26,7 @@ along with GNU Emacs.  If not, see 
<https://www.gnu.org/licenses/>.  */
 #include "composite.h"
 #include "font.h"
 #include "dispextern.h"
+#include "buffer.h"
 
 #ifdef HAVE_NTGUI
 
@@ -438,7 +439,11 @@ hbfont_shape (Lisp_Object lgstring, Lisp_Object direction)
 
   /* If the caller didn't provide a meaningful DIRECTION, let HarfBuzz
      guess it. */
-  if (!NILP (direction))
+  if (!NILP (direction)
+      /* If they bind bidi-display-reordering to nil, the DIRECTION
+        they provide is meaningless, and we should let HarfBuzz guess
+        the real direction.  */
+      && !NILP (BVAR (current_buffer, bidi_display_reordering)))
     {
       hb_direction_t dir = HB_DIRECTION_LTR;
       if (EQ (direction, QL2R))
diff --git a/src/xdisp.c b/src/xdisp.c
index 52f6ab8..bd07114 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -10449,33 +10449,43 @@ in_display_vector_p (struct it *it)
 DEFUN ("window-text-pixel-size", Fwindow_text_pixel_size, 
Swindow_text_pixel_size, 0, 6, 0,
        doc: /* Return the size of the text of WINDOW's buffer in pixels.
 WINDOW must be a live window and defaults to the selected one.  The
-return value is a cons of the maximum pixel-width of any text line and
-the maximum pixel-height of all text lines.
+return value is a cons of the maximum pixel-width of any text line
+and the pixel-height of all the text lines in the accessible portion
+of buffer text.
+
+This function exists to allow Lisp programs to adjust the dimensions
+of WINDOW to the buffer text it needs to display.
 
 The optional argument FROM, if non-nil, specifies the first text
-position and defaults to the minimum accessible position of the buffer.
-If FROM is t, use the minimum accessible position that starts a
-non-empty line.  TO, if non-nil, specifies the last text position and
-defaults to the maximum accessible position of the buffer.  If TO is t,
-use the maximum accessible position that ends a non-empty line.
-
-The optional argument X-LIMIT, if non-nil, specifies the maximum text
-width that can be returned.  X-LIMIT nil or omitted, means to use the
-pixel-width of WINDOW's body; use this if you want to know how high
-WINDOW should be become in order to fit all of its buffer's text with
-the width of WINDOW unaltered.  Use the maximum width WINDOW may assume
-if you intend to change WINDOW's width.  In any case, text whose
-x-coordinate is beyond X-LIMIT is ignored.  Since calculating the width
-of long lines can take some time, it's always a good idea to make this
-argument as small as possible; in particular, if the buffer contains
-long lines that shall be truncated anyway.
-
-The optional argument Y-LIMIT, if non-nil, specifies the maximum text
-height (excluding the height of the mode- or header-line, if any) that
-can be returned.  Text lines whose y-coordinate is beyond Y-LIMIT are
-ignored.  Since calculating the text height of a large buffer can take
-some time, it makes sense to specify this argument if the size of the
-buffer is large or unknown.
+position to consider, and defaults to the minimum accessible position
+of the buffer.  If FROM is t, it stands for the minimum accessible
+position that starts a non-empty line.  TO, if non-nil, specifies the
+last text position and defaults to the maximum accessible position of
+the buffer.  If TO is t, it stands for the maximum accessible position
+that ends a non-empty line.
+
+The optional argument X-LIMIT, if non-nil, specifies the maximum X
+coordinate beyond which the text should be ignored.  It is therefore
+also the maximum width that the function can return.  X-LIMIT nil or
+omitted means to use the pixel-width of WINDOW's body.  This default
+means text of truncated lines wider than the window will be ignored;
+specify a large value for X-LIMIT if lines are truncated and you need
+to account for the truncated text.  Use nil for X-LIMIT if you want to
+know how high WINDOW should become in order to fit all of its buffer's
+text with the width of WINDOW unaltered.  Use the maximum width WINDOW
+may assume if you intend to change WINDOW's width.  Since calculating
+the width of long lines can take some time, it's always a good idea to
+make this argument as small as possible; in particular, if the buffer
+contains long lines that shall be truncated anyway.
+
+The optional argument Y-LIMIT, if non-nil, specifies the maximum Y
+coordinate beyond which the text is to be ignored; it is therefore
+also the maxcomp height that the function can return (excluding the
+height of the mode- or header-line, if any).  Y-LIMIT nil or omitted
+means consider all of the accessible portion of buffer text up to the
+position specified by TO.  Since calculating the text height of a
+large buffer can take some time, it makes sense to specify this
+argument if the size of the buffer is large or unknown.
 
 Optional argument MODE-AND-HEADER-LINE nil or omitted means do not
 include the height of the mode- or header-line of WINDOW in the return
diff --git a/test/lisp/battery-tests.el b/test/lisp/battery-tests.el
new file mode 100644
index 0000000..052ae49
--- /dev/null
+++ b/test/lisp/battery-tests.el
@@ -0,0 +1,58 @@
+;;; battery-tests.el --- tests for battery.el -*- lexical-binding: t -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Code:
+
+(require 'battery)
+
+(ert-deftest battery-linux-proc-apm-regexp ()
+  "Test `battery-linux-proc-apm-regexp'."
+  (let ((str "1.16 1.2 0x07 0x01 0xff 0x80 -1% -1 ?"))
+    (should (string-match battery-linux-proc-apm-regexp str))
+    (should (equal (match-string 0 str) str))
+    (should (equal (match-string 1 str) "1.16"))
+    (should (equal (match-string 2 str) "1.2"))
+    (should (equal (match-string 3 str) "07"))
+    (should (equal (match-string 4 str) "01"))
+    (should (equal (match-string 5 str) "ff"))
+    (should (equal (match-string 6 str) "80"))
+    (should (equal (match-string 7 str) "-1"))
+    (should (equal (match-string 8 str) "-1"))
+    (should (equal (match-string 9 str) "?")))
+  (let ((str "1.16 1.2 0x03 0x00 0x00 0x01 99% 1792 min"))
+    (should (string-match battery-linux-proc-apm-regexp str))
+    (should (equal (match-string 0 str) str))
+    (should (equal (match-string 1 str) "1.16"))
+    (should (equal (match-string 2 str) "1.2"))
+    (should (equal (match-string 3 str) "03"))
+    (should (equal (match-string 4 str) "00"))
+    (should (equal (match-string 5 str) "00"))
+    (should (equal (match-string 6 str) "01"))
+    (should (equal (match-string 7 str) "99"))
+    (should (equal (match-string 8 str) "1792"))
+    (should (equal (match-string 9 str) "min"))))
+
+(ert-deftest battery-format ()
+  "Test `battery-format'."
+  (should (equal (battery-format "" ()) ""))
+  (should (equal (battery-format "" '((?b . "-"))) ""))
+  (should (equal (battery-format "%a%b%p%%" '((?b . "-") (?p . "99")))
+                 "-99%")))
+
+;;; battery-tests.el ends here
diff --git a/test/lisp/emacs-lisp/cl-generic-tests.el 
b/test/lisp/emacs-lisp/cl-generic-tests.el
index d9f1cb9..51c9884 100644
--- a/test/lisp/emacs-lisp/cl-generic-tests.el
+++ b/test/lisp/emacs-lisp/cl-generic-tests.el
@@ -23,9 +23,15 @@
 
 ;;; Code:
 
-(eval-when-compile (require 'ert)) ;Don't indirectly require cl-lib at 
run-time.
 (require 'cl-generic)
 
+;; Don't indirectly require `cl-lib' at run-time.
+(eval-when-compile (require 'ert))
+(declare-function ert--should-signal-hook "ert")
+(declare-function ert--signal-should-execution "ert")
+(declare-function ert-fail "ert")
+(declare-function ert-set-test "ert")
+
 (fmakunbound 'cl--generic-1)
 (cl-defgeneric cl--generic-1 (x y))
 (cl-defgeneric (setf cl--generic-1) (v y z) "My generic doc.")
diff --git a/test/lisp/emacs-lisp/package-tests.el 
b/test/lisp/emacs-lisp/package-tests.el
index 732bf5e..90714af 100644
--- a/test/lisp/emacs-lisp/package-tests.el
+++ b/test/lisp/emacs-lisp/package-tests.el
@@ -267,6 +267,9 @@ Must called from within a `tar-mode' buffer."
     (should (package-installed-p 'simple-single))
     (should (package-installed-p 'simple-depend))))
 
+(declare-function macro-problem-func "macro-problem" ())
+(declare-function macro-problem-10-and-90 "macro-problem" ())
+
 (ert-deftest package-test-macro-compilation ()
   "Install a package which includes a dependency."
   (with-package-test (:basedir "package-resources")
@@ -616,6 +619,8 @@ Must called from within a `tar-mode' buffer."
                     (let ((process-environment
                            (cons (concat "HOME=" homedir)
                                  process-environment)))
+                       (require 'epg-config)
+                       (defvar epg-config--program-alist)
                       (epg-find-configuration
                         'OpenPGP nil
                         ;; By default we require gpg2 2.1+ due to some
diff --git a/test/lisp/eshell/eshell-tests.el b/test/lisp/eshell/eshell-tests.el
index ce8d728..16a0464 100644
--- a/test/lisp/eshell/eshell-tests.el
+++ b/test/lisp/eshell/eshell-tests.el
@@ -26,6 +26,7 @@
 ;;; Code:
 
 (require 'ert)
+(require 'esh-mode)
 (require 'eshell)
 
 (defmacro with-temp-eshell (&rest body)
diff --git a/test/lisp/image/exif-tests.el b/test/lisp/image/exif-tests.el
index 8a22311..9e5da46 100644
--- a/test/lisp/image/exif-tests.el
+++ b/test/lisp/image/exif-tests.el
@@ -21,7 +21,6 @@
 
 (require 'ert)
 (require 'exif)
-(require 'seq)
 
 (defun test-image-file (name)
   (expand-file-name
@@ -49,7 +48,7 @@
     (should (equal (exif-elem exif 'artist) "z"))))
 
 (ert-deftest test-exit-direct-ascii-value ()
-  (equal (exif--direct-ascii-value 28005 2 t) (string ?e ?m 0))
-  (equal (exif--direct-ascii-value 28005 2 nil) (string ?m ?e 0)))
+  (should (equal (exif--direct-ascii-value 28005 2 t) (string ?e ?m 0)))
+  (should (equal (exif--direct-ascii-value 28005 2 nil) (string ?m ?e 0))))
 
 ;;; exif-tests.el ends here
diff --git a/test/lisp/international/ccl-tests.el 
b/test/lisp/international/ccl-tests.el
index 283b2e1..9277d01 100644
--- a/test/lisp/international/ccl-tests.el
+++ b/test/lisp/international/ccl-tests.el
@@ -96,6 +96,9 @@ At EOF:
     (ccl-dump prog-pgg-code)
     (should (equal (buffer-string) prog-pgg-dump))))
 
+(defvar pgg-parse-crc24)
+(declare-function pgg-parse-crc24-string "pgg-parse" (string))
+
 (ert-deftest pgg-parse-crc24 ()
   ;; Compiler
   (require 'pgg)
diff --git a/test/lisp/mail/footnote-tests.el b/test/lisp/mail/footnote-tests.el
index 458964c..79f4807 100644
--- a/test/lisp/mail/footnote-tests.el
+++ b/test/lisp/mail/footnote-tests.el
@@ -18,12 +18,10 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-;;; Commentary:
-
-;;
-
 ;;; Code:
 
+(require 'footnote)
+
 (ert-deftest footnote-tests-same-place ()
   (with-temp-buffer
     (footnote-mode 1)
diff --git a/test/lisp/progmodes/elisp-mode-tests.el 
b/test/lisp/progmodes/elisp-mode-tests.el
index b793f73..2ba0065 100644
--- a/test/lisp/progmodes/elisp-mode-tests.el
+++ b/test/lisp/progmodes/elisp-mode-tests.el
@@ -598,16 +598,17 @@ to (xref-elisp-test-descr-to-target xref)."
 ;; Define some mode-local overloadable/overridden functions for xref to find
 (require 'mode-local)
 
+(declare-function xref-elisp-overloadable-no-methods-default 
"elisp-mode-tests")
+(declare-function xref-elisp-overloadable-no-default-default 
"elisp-mode-tests")
+
 (define-overloadable-function xref-elisp-overloadable-no-methods ()
   "doc string overloadable no-methods")
 
 (define-overloadable-function xref-elisp-overloadable-no-default ()
   "doc string overloadable no-default")
 
-;; FIXME: byte compiler complains about unused lexical arguments
-;; generated by this macro.
 (define-mode-local-override xref-elisp-overloadable-no-default c-mode
-  (start end &optional nonterminal depth returnonerror)
+  (_start _end &optional _nonterminal _depth _returnonerror)
   "doc string overloadable no-default c-mode."
   "result overloadable no-default c-mode.")
 
@@ -616,7 +617,7 @@ to (xref-elisp-test-descr-to-target xref)."
   "result overloadable co-located-default.")
 
 (define-mode-local-override xref-elisp-overloadable-co-located-default c-mode
-  (start end &optional nonterminal depth returnonerror)
+  (_start _end &optional _nonterminal _depth _returnonerror)
   "doc string overloadable co-located-default c-mode."
   "result overloadable co-located-default c-mode.")
 
@@ -628,7 +629,7 @@ to (xref-elisp-test-descr-to-target xref)."
   "result overloadable separate-default.")
 
 (define-mode-local-override xref-elisp-overloadable-separate-default c-mode
-  (start end &optional nonterminal depth returnonerror)
+  (_start _end &optional _nonterminal _depth _returnonerror)
   "doc string overloadable separate-default c-mode."
   "result overloadable separate-default c-mode.")
 
diff --git a/test/lisp/progmodes/sql-tests.el b/test/lisp/progmodes/sql-tests.el
index d6f8934..65ed76b 100644
--- a/test/lisp/progmodes/sql-tests.el
+++ b/test/lisp/progmodes/sql-tests.el
@@ -193,7 +193,7 @@ Perform ACTION and validate results"
   "Add a product that already exists."
 
   (sql-test-product-feature-harness
-      (should-error (sql-add-feature 'a "Aaa"))
+      (should-error (sql-add-product 'a "Aaa"))
       (should (equal (pp-to-string (assoc 'a sql-product-alist))
                      "(a :X 1 :Y 2 :Z sql-test-feature-value-a)\n"))))
 
diff --git a/test/lisp/simple-tests.el b/test/lisp/simple-tests.el
index 88be74f..4adcacb 100644
--- a/test/lisp/simple-tests.el
+++ b/test/lisp/simple-tests.el
@@ -758,8 +758,7 @@ See Bug#21722."
 
 (defmacro with-shell-command-dont-erase-buffer (str output-buffer-is-current 
&rest body)
   (declare (debug (sexp form body)) (indent 2))
-  (let ((expected (make-symbol "expected"))
-        (command (make-symbol "command"))
+  (let ((command (make-symbol "command"))
         (caller-buf (make-symbol "caller-buf"))
         (output-buf (make-symbol "output-buf")))
     `(let* ((,caller-buf (generate-new-buffer "caller-buf"))
diff --git a/test/lisp/wdired-tests.el b/test/lisp/wdired-tests.el
index baa5477..5b01c54 100644
--- a/test/lisp/wdired-tests.el
+++ b/test/lisp/wdired-tests.el
@@ -129,6 +129,8 @@ wdired-mode."
        (delete-directory test-dir t)))))
 
 (defvar server-socket-dir)
+(declare-function dired-smart-shell-command "dired-x"
+                  (command &optional output-buffer error-buffer))
 
 (ert-deftest wdired-test-bug34915 ()
   "Test editing when dired-listing-switches includes -F.
diff --git a/test/src/buffer-tests.el b/test/src/buffer-tests.el
index 6e97646..0db66f9 100644
--- a/test/src/buffer-tests.el
+++ b/test/src/buffer-tests.el
@@ -20,6 +20,7 @@
 ;;; Code:
 
 (require 'ert)
+(require 'seq)
 (eval-when-compile (require 'cl-lib))
 
 (ert-deftest overlay-modification-hooks-message-other-buf ()
diff --git a/test/src/data-tests.el b/test/src/data-tests.el
index 3cebb3d..ed09203 100644
--- a/test/src/data-tests.el
+++ b/test/src/data-tests.el
@@ -174,7 +174,7 @@ most-positive-fixnum, which is just less than a power of 
2.")
            sum 1))
 
 (defun test-bool-vector-bv-from-hex-string (desc)
-  (let (bv nchars nibbles)
+  (let (bv nibbles)
     (dolist (c (string-to-list desc))
       (push (string-to-number
              (char-to-string c)
@@ -244,9 +244,9 @@ comparing the subr with a much slower lisp implementation."
 
 (defun test-bool-vector-apply-mock-op (mock a b c)
   "Compute (slowly) the correct result of a bool-vector set operation."
-  (let (changed nv)
+  (let (changed)
     (cl-assert (eql (length b) (length c)))
-    (if a (setf nv a)
+    (unless a
       (setf a (make-bool-vector (length b) nil))
       (setf changed t))
 



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