* lisp/progmodes/cc-fonts.el (c-font-lock-cut-off-declarators)
(c-font-lock-enclosing-decls)
* lisp/progmodes/cc-mode.el (c-fl-decl-start): Replace invocations of
c-beginning-of-decl-1 with less accurate invocations of
c-syntactic-skip-backwards to speed up fontification.
Also amend the code so that low-level searches to the end of literals are done
only when these positions get used.
* lisp/progmodes/cc-engine.el (c-crosses-statement-barrier-p): Use the new
c-literal-start instead of c-literal-limit.
(c-state-semi-nonlit-pos-cache): Change the structure of this cache, such that
it stores details of the literal at a point, rather than merely points outside
of literals.
(c-state-semi-pp-to-literal, c-state-full-pp-to-literal)
(c-cache-to-parse-ps-state, c-parse-ps-state-to-cache, c-ps-state-cache-pos)
(c-parse-ps-state-below, c-literal-start): New functions.
(c-state-semi-safe-place): Removed.
(c-in-literal): Use c-state-semi-pp-to-literal, so as not to scan to its end.
(c-literal-limits, c-determine-limit-get-base): consequential amendments.
(c-find-decl-spots, c-before-change-check-<>-operators, c-raw-string-pos)
(c-guess-basic-syntax (CASE 2)): Avoid needless scans to end of literals.
* lisp/progmodes/cc-fonts.el (c-font-lock-doc-comments): Avoid needless scans
to end of literals.
* lisp/progmodes/cc-mode.el (c-fl-decl-start): Avoid needless scans to end of
literals.
* lisp/progmodes/cc-cmds.el (c-beginning-of-defun, c-end-of-defun)
(c-defun-name, c-declaration-limits): Avoid needless scans to end of literals.
* lisp/progmodes/cc-langs.el (c-get-state-before-change-functions): insert
c-before-after-change-digit-quote into the C++ value.
(c-before-font-lock-functions): Insert c-depropertize-new-text into the values
for all languages. Insert c-before-after-change-digit-quote into the C++
value.
* lisp/progmodes/cc-mode.el (c-depropertize-CPP): Wrap the function in
c-save-buffer-state.
(c-depropertize-new-text, c-before-after-change-digit-quote): New functions.
* lisp/progmodes/cc-mode.el (c-or-c++-mode): A new function which
analyses contents of the buffer to determine whether it looks like C++
source code and based on that enables c-mode or c++-mode.
(c-or-c++-mode--regexp): Regular expression which, when matches
a buffer, signals file is C++.
* lisp/progmodes/cc-engine.el (c-raw-string-pos, c-depropertize-raw-string)
(c-depropertize-raw-strings-in-region,
c-before-change-check-raw-strings)
(c-propertize-raw-string-opener, c-after-change-re-mark-raw-strings): New
functions.
* lisp/progmodes/cc-fonts.el (c-basic-matchers-before): Insert a clause for
c-font-lock-raw-strings.
(c-font-lock-raw-strings): New function.
* lisp/progmodes/cc-langs.el (c-get-state-before-change-functions): Insert
c-before-change-check-raw-strings into the C++ value, and c-depropertize-CPP
into the values for C, C++, and Objective C.
(c-before-font-lock-functions): Insert c-after-change-re-mark-raw-strings into
the C++ value.
* lisp/progmodes/cc-mode.el (c-old-BEG, c-old-END): New variables.
(c-depropertize-CPP): New function, extracted from
c-neutralize-syntax-in-and-mark-CPP.
(c-neutralize-syntax-in-and-mark-CPP): Remove the call to
c-clear-char-property-with-value for 'syntax-table value '(1) at the beginning
of the function.
(c-after-change): Set c-old-BEG and c-old-END to the current values of
c-new-BEG and c-new-END.
Remove the now redundant c-old-BOM and c-old-EOM.
* lisp/progmodes/cc-engine.el (c-macro-cache-syntactic): Change and simplify
meaning.
(c-macro-cache-no-comment): New variable.
(c-invalidate-macro-cache, c-beginning-of-macro, c-end-of-macro): incorporate
the new c-macro-cache-no-comment.
(c-syntactic-end-of-macro): Make better use of c-macro-cache-syntactic.
(c-no-comment-end-of-macro): New function.
* lisp/progmodes/cc-langs.el (c-before-font-lock-functions): Add
c-extend-font-lock-region-for-macros to C/C++/ObjC value.
* lisp/progmodes/cc-mode.el (c-old-BOM, c-old-EOM): Remove.
(c-extend-region-for-CPP): Put results in c-new-BEG/END rather than
c-old-BOM/EOM.
(c-extend-font-lock-region-for-macros): Simplify meaning, no longer returning
a cons for the new region, since the function is now called as an after-change
function. No longer adjust c-new-END for the length of inserted/deleted
text. Move the size restrictions on macros to here from
c-neutralize-syntax-in-and-mark-CPP.
(c-neutralize-syntax-in-and-mark-CPP): No longer adjust c-new-BEG/END here.
Use c-no-comment-end-of-macro rather than c-syntactic-end-of-macro to find the
upper boundary to "neutralize" syntactically obtrusive characters.
(c-change-expand-fl-region): Don't set c-new-END to next BOL when already at
one.
It now runs internal variable setting functions after the mode hooks, no
longer runs the mode hooks twice, and declares the configuration variables for
noise macros and macros with semicolons as safe variables (when given suitable
arguments).
Fixes bug #16759 and bug #23476.
* .dir-locals: Put the c-noise-macros-with-paren-names setting back into the C
Mode value.
* lisp/progmodes/cc-mode.el: (c-basic-common-init): Remove the call to
c-make-macro-with-semi-re.
(c-mode, c++-mode, objc-mode, java-mode, idl-mode, pike-mode, awk-mode): Move
c-make-noise-macro-regexps and c-make-macro-with-semi-re (where appropriate)
and c-update-modeline into the :after-hook form. Remove the explicit settings
of the syntax table, the abbreviation table and the local key map, since they
duplicate forms generated by define-derived-mode. Remove the explicit
invocation of each mode's mode hook, since they duplicate ones generated by
define-derived-mode.
* lisp/progmodes/cc-vars.el: (c-string-list-p, c-string-or-string-list-p): New
functions.
(c-noise-macro-names, c-noise-macro-with-parens-names): give the
save-local-variable property c-string-list-p.
(c-macro-names-with-semicolon): give the save-local-variable property
c-string-or-string-list-p.
* doc/misc/cc-mode.texi: (Macros with ;, Noise Macros): Note that it's not
necessary to call the regexp generating functions after setting the pertinent
configuration values in a mode hook.
This allows the calling of c-restore-<>-properties from c-common-init without
the test suite giving spurious errors.
* lisp/progmodes/cc-engine.el (c-forward-<>-arglist): Remove the form that
sets face properties.
(c-forward-<>-arglist-recur): Reformulate the bit that handles types inside
template brackets using c-inside-<>-type-key. Don't bind
c-record-type-identifiers or c-record-found-types around the recursive call,
allowing positions of found types to flow back to the caller.
* lisp/progmodes/cc-langs.el (c-inside-<>-type-kwds, c-inside-<>-type-key):
new lang consts/var.
* lisp/progmodes/cc-mode.el (c-common-init): Don't remove
c-restore-<>-properties from the list of functions called at mode
initialization.
* lisp/progmodes/cc-engine.el (c-forward-keyword-prefixed-id, c-forward-type)
(c-forward-declarator, c-forward-decl-or-cast-1, c-backward-over-enum-header)
(c-guess-basic-syntax): Check c-opt-cpp-prefix before `looking-at'
c-noise-macro-with-parens-name-re.
* lisp/progmodes/cc-fonts.el (c-complex-decl-matchers): The same as for
cc-engine.el.
* lisp/progmodes/cc-mode.el (c-basic-common-init): Add call to
`c-make-noise-macro-regexps'.
(c-mode, c++-mode, objc-mode): Remove calls to `c-make-noise-macro-regexps'.
* lisp/progmodes/cc-vars.el (c-noise-macro-with-parens-name-re)
(c-noise-macro-with-re): Initialize to "\\<\\>" rather than nil.
* lisp/progmodes/cc-langs.el (c-symbol-char-key): New language variable.
* lisp/progmodes/cc-vars.el (c-noise-macro-names)
(c-noise-macro-with-parens-names): New customizable variables.
(c-noise-macro-name-re, c-noise-macro-with-parens-name-re): New variables.
(c-make-noise-macro-regexps): New function.
* lisp/progmodes/cc-engine.el (c-forward-sws, c-backward-sws): Adapt to treat
members of c-noise-macro-names as whitespace.
(c-forward-noise-clause): New function.
(c-forward-keyword-prefixed-id, c-forward-type, c-forward-declarator)
(c-forward-decl-or-cast-1, c-backward-over-enum-header)
(c-guess-basic-syntax CASE 5A.3, CASE 5A.5, CASE 9A):
Handle "noise clauses" in parallel with, e.g., "hangon key clauses".
* lisp/progmodes/cc-fonts.el (c-complex-decl-matchers): Handle "noise clauses"
in parallel with "prefix-spec keywords".
* lisp/progmodes/cc-mode.el (c-mode, c++-mode, objc-mode): call
c-make-noise-macro-regexps to initialize the internal variables.
* doc/misc/cc-mode.texi ("Noise Macros"): New section documenting the new
facilities.
* lisp/progmodes/cc-mode.el (c-leave-cc-mode-mode): Remove from the buffer
all instances of the text properties/extents category, syntax-table,
c-is-sws, c-in-sws, c-type, and c-awk-NL-prop.
* lisp/progmodes/cc-mode.el (c-font-lock-init): Remove
`font-lock-extend-regions-wholelines' from
`font-lock-extend-region-functions' rather than setting the latter to
nil.
* lisp/progmodes/cc-langs.el (c-before-context-fontification-functions):
swap order of entries so that awk's entry isn't superseded by the default.
* lisp/progmodes/cc-mode.el (c-before-context-fl-expand-region): Correct
to handle nil value of c-before-context-fontification-functions.
These are category/syntax-table properties to give < and > paren syntax.
Also apply certain `c-type' text properties to the insides of <..> constructs
to ensure that identifiers contained by them get fontified. This patch fixes
bug #681.
* lisp/progmodes/cc-cmds.el (c-electric-lt-gt): Reformulate due to new
after-change action.
* lisp/progmodes/cc-engine.el (c-before-change-check-<>-operators): Expand
change region to include <s and >s which might not be already marked as
parens, rather than just when paren text properties are removed.
(c-restore-<>-properties): New after-change function, which applies text
properties marking < and > with paren syntax.
* lisp/progmodes/cc-fonts.el (c-font-lock-declarations): Ensure `c-type'
properties are applied to the interiors of <...> constructs, to ensure
fontification of identifiers there.
* lisp/progmodes/cc-langs.el (c-before-font-lock-functions): Add
c-restore-<>-properties to this list for C++ and Java.
* lisp/progmodes/cc-mode.el (c-common-init): When invoking
c-before-font-lock-functions, exclude c-restore-<>-properties from the
functions invoked.
(c-before-change): Initialize c-new-BEG/END here (rather than c-after-change)
to allow modification by before-change functions.
(c-after-change): Amend c-new-END here, rather than initializing it and
c-new-BEG.
* lisp/progmodes/cc-mode.el (top level): remove compile time declaration of
`font-lock-syntactic-keywords' (which CC Mode doesn't use).
* lisp/progmodes/cc-awk.el (awk-mode-syntax-table)
(c-awk-set-syntax-table-properties): Clarify comments about
`font-lock-syntactic-keywords'.
* lisp/progmodes/cc-bytecomp.el (cc-bytecomp-load): Create a dummy declaration
of this before the real (interpreted) one, to satisfy the byte compiler.
Problem reported by Artur Malabarba in:
http://lists.gnu.org/archive/html/emacs-devel/2015-11/msg01513.html
Most of these fixes are to documentation; many involve fixing
longstanding quoting glitches that are independent of the
recent substitute-command-keys changes. The changes to code are:
* lisp/cedet/mode-local.el (mode-local-augment-function-help)
(describe-mode-local-overload):
Substitute docstrings before displaying them.
* lisp/emacs-lisp/cl-macs.el (cl--transform-lambda):
Quote the generated docstring for later substitution.
lisp/progmodes/cc-engine.el (c-backward-single-comment, c-backward-comments)
(c-invalidate-state-cache-1, c-parse-state-1, c-guess-basic-syntax):
remove bindings of open-paren-in-column-0-is-defun-start to nil.
(c-get-fallback-scan-pos): "New" function (existed several years ago).
(c-parse-state-get-strategy): Reintroduce the 'BOD strategy, using
c-get-fallback-scan-pos.
(c-parse-state-1): Handle 'BOD strategy.
lisp/progmodes/cc-mode.el (c-before-change, c-after-change)
c-font-lock-fontify-region): remove bindings of
open-paren-in-column-0-is-defun-start to nil.
cc-mode.texi (Performance Issues, Limitations and Known Bugs): Fix mix up
between @chapter and @appendix.
Fixes bug#20266.
lisp/progmodes/cc-mode.el (c-basic-common-init): Make
yank-handled-properties buffer local, and remove 'category from it.
(c-called-from-text-property-change-p): New function.
(c-before-change): Don't do anything if a call of the new function
returns non-nil.
(c-after-change): Don't do much if a call of the new function returns
non-nil.
(c-extend-after-change-region): Put changes to text property 'fontified
inside c-save-buffer-state.
* progmodes/cc-mode.el (c-common-init): bind
\(before\|after\)-change-functions to nil around invocations of
c-get-state-before-change-functions and
c-before-font-lock-functions to prevent recursive invocations.
(c-neutralize-syntax-in-and-mark-CPP): On c-beginning-of-macro,
check that point has actually moved back.
(c-fl-decl-start): Check whether c-beginning-of-decl-1 has
actually found a boundary (as contrasted with hitting a search
limit).
* progmodes/cc-mode.el (c-extend-after-change-region): Widen before
applying text properties.
* progmodes/cc-langs.el (c-before-font-lock-functions): Update an entry
to a new function name.
* cc-mode.el (c-fl-decl-start): Renamed from c-set-fl-decl-start.
* Change
signature such that nil is returned when no declaration is found.
(c-change-expand-fl-region): Renamed from c-change-set-fl-decl-start.
This now also handles expanding the font lock region to whole lines.
(c-context-expand-fl-region): Renamed from c-context-set-fl-decl-start.
This now also handles expanding the font lock region to whole lines.
(c-font-lock-fontify-region): When a change font lock region is
spuriously enlarged to the beginning-of-line by jit-lock, fontify the
extra bit separately from the region calculated by CC Mode.
(c-extend-after-change-region): Explicitly apply 'fontified properties
to
the extended bits of the font lock region.
* cc-langs.el (c-before-font-lock-functions)
(c-before-context-fontification-functions): Use new names for existing
functions (see above).
d3852a9 * admin/admin.el (manual-meta-string): Use bug-gnu-emacs.
d69e9f1 CC Mode: Stop Font Lock forcing fontification from BOL.
Conflicts:
admin/ChangeLog
lisp/ChangeLog
e726f20 Handle "#" operator properly inside macro. Fix coding bug.
618931b Handle dead frame in menu-bar-non-minibuffer-window-p. (Bug#19728)
017a03a Document MS-Windows file-name idiosyncrasies (Bug#19463)
f3faf4f Fix description of Customize buffer in Emacs manual.
1c1d0b7 Fix a typo in the Emacs manual's Hungry Delete description.
be7fb82 src/dispextern.h (FACE_FOR_CHAR): Fix the commentary.
33c4409 Spelling fixes
6c8231e python.el: Handle tabs in python-indent-dedent-line.
41c3b92 * lisp/progmodes/python.el: Respect user indentation after comment.
868df45 Avoid compiler warnings in decode_env_path.
b28c979 Fix XEmacs version typo in comment and ChangeLog
989fb32 Improve solution of bug #197016310530 Fix refilling of list of language environments in User Manual
c4c447d Restore XEmacs compatibility
Conflicts:
doc/emacs/ChangeLog
lisp/ChangeLog
src/ChangeLog
test/ChangeLog
cc-mode.el (c-neutralize-syntax-in-and-mark-CPP): On finding a "#" which
looks like the start of a macro, check it isn't already inside a macro.
cc-engine.el (c-state-safe-place): Don't record a new "safe" position
into the list of them when this is beyond our current position.
The main change is to only use the `category' text-property only when
available. For that many calls are changed to use c-get-char-property,
c-next-single-property-change, c-sc-scan-lists,
c-sc-parse-partial-sexp, c-unmark-<->-as-paren.
* lisp/progmodes/cc-align.el (c-lineup-respect-col-0): New function.
* lisp/progmodes/cc-cmds.el (c-forward-into-nomenclature)
(c-backward-into-nomenclature): Use cc-subword if subword-mode is
not available.
(c-beginning-of-defun, c-end-of-defun, c-mark-function)
(c-indent-line-or-region): Use c-region-is-active-p.
* lisp/progmodes/cc-defs.el (c-version): Bump up to 5.33.
(c-use-category): New const.
(c-next-single-property-change): New macro.
(c-region-is-active-p): Prefer region-active-p when available.
(c-search-backward-char-property): Fix old min/max typo; probably
a copy/paste error.
(c-mark-<-as-paren, c-mark->-as-paren, c-unmark-<->-as-paren):
Turn them into macros that obey c-use-category.
(c-sc-scan-lists-no-category+1+1, c-sc-scan-lists-no-category+1-1)
(c-sc-scan-lists-no-category-1+1, c-sc-scan-lists-no-category-1-1)
(c-sc-scan-lists, c-sc-parse-partial-sexp)
(c-looking-at-non-alphnumspace): New macros.
(c-sc-parse-partial-sexp-no-category): New function.
(c-emacs-features): Add `category-properties' element.
* lisp/progmodes/cc-engine.el (c-invalidate-state-cache, c-parse-state):
Handle the case where categories are not available.
(c-record-parse-state-state, c-replay-parse-state-state):
Handle marker values.
(c-before-change-check-<>-operators): Look for the `syntax-table'
property rather than for the corresponding `category'.
(c-looking-at-decl-block): Remove unused var
`c-disallow-comma-in-<>-arglists'.
(c-forward-<>-arglist-recur): Remove unused var
`orig-record-found-types'.
* lisp/progmodes/cc-langs.el (c-modified-constant): New lang var.
(c-known-type-key): Don't make a list just to throw it away.
* lisp/progmodes/cc-bytecomp.el (cc-bytecomp-unbound-variables)
(cc-bytecomp-original-functions, cc-bytecomp-original-properties)
(cc-bytecomp-loaded-files): Re-set each time the file is loaded.
(cc-bytecomp-obsolete-var, cc-bytecomp-ignore-obsolete)
(cc-bytecomp-obsolete-fun): Delete unused functions.
* lisp/progmodes/cc-mode.el (c-just-done-before-change): New var.
(c-basic-common-init): Initialize it.
(c-common-init): Only use mode-require-final-newline when available.
(c-before-change): Check and set c-just-done-before-change.
(c-after-change): Re-set c-just-done-before-change.
(c-advise-fl-for-region): New macro.
(lazy-lock-defer-rest-after-change, lazy-lock-defer-line-after-change)
(font-lock-after-change-function, jit-lock-after-change):
Advise if needed.
* lisp/progmodes/cc-mode.el (c-initialize-cc-mode): Don't quote a symbol
just to then pass it to `symbol-value'.
(prog-mode): Provide fallback definition, if needed.
* lisp/progmodes/cc-langs.el: Always load `cl'. Don't load `cl-lib'.
Remove "cl-" prefix accordingly.
* lisp/progmodes/cc-fonts.el (c-font-lock-invalid-string): Use integerp or
characterp depending on the type of characters.
(c-font-lock-enum-tail): Remove unused var `start'.
* lisp/progmodes/cc-engine.el: Load CL at compile-time.
(c-declare-lang-variables): Use mapcan.
(c-append-to-state-cache): Remove unused var `ce+1'.
(c-parse-state-state): Make buffer-local.
(c-ssb-lit-begin): Remove unused var `pps-end-pos'.
(c-just-after-func-arglist-p): Remove unused var `end'.
* lisp/progmodes/cc-defs.el: Load cc-fix if delete-dups is undefined.
(c-<-as-paren-syntax, c->-as-paren-syntax): Move definition earlier.
(c-make-keywords-re): Use delete-dups.
(c-get-current-file): Avoid file-name-base.
* lisp/progmodes/cc-cmds.el (c-electric-lt-gt): Remove unused var
`close-paren-inserted'.
* lisp/progmodes/cc-awk.el (c-forward-sws): Remove unused declaration.
loaded at run-time).
* progmodes/cc-langs.el (c-no-parens-syntax-table): Rename the
c-lang-const to c-make-no-parens-syntax-table and correct the
logic.
(c-no-parens-syntax-table): Correct the logic of the c-lang-defvar.
plus misc cleanup.
* lisp/progmodes/cc-mode.el (c-basic-common-init):
Set open-paren-in-column-0-is-defun-start.
(adaptive-fill-first-line-regexp, font-lock-syntactic-keywords):
Remove declarations, unused.
(run-mode-hooks): Remove declaration.
(font-lock-defaults): Use plain `defvar' to declare.
(c-run-mode-hooks): Test existence of run-mode-hooks with fboundp.
* lisp/progmodes/cc-langs.el (c-filter-ops): Avoid `setq'.
(c-make-mode-syntax-table): Don't micro-optimize.
(c-keywords, c-keyword-member-alist): Simplify.
(c-kwds-lang-consts): Don't eval at compile-time.
(c-primary-expr-regexp): Comment out unused vars.
* lisp/progmodes/cc-fonts.el (c-font-lock-context): Declare at top-level.
(c-font-byte-compile): New var.
(c--compile): New function. Use it instead of `byte-compile'.
(c-cpp-matchers): Quote the value returned by
`c-make-syntactic-matcher' in case it's not self-evaluating.
(c-basic-matchers-before): Avoid a plain MATCHER as keyword, wrap it in
parentheses instead (in case MATCHER happens to be a list).
(c-font-lock-enum-tail): Remove unused var `start'.
(c-font-lock-objc-methods): Silence byte-compiler warnings.
* lisp/progmodes/cc-engine.el (c-syntactic-re-search-forward): Sink an `if'
test into an argument.
* lisp/progmodes/cc-defs.el (c-point, c-major-mode-is, c-put-char-property)
(c-get-char-property): Don't use `eval' just to unquote a constant.
(c-use-extents): Remove. Use (featurep 'xemacs), compiled
more efficiently.
(c-put-char-property-fun): Don't call `byte-compile' by hand.
(c-clear-char-property, c-clear-char-properties): Check that `property'
is a quoted constant.
(c-emacs-features): Remove `infodock', `syntax-properties', and
`pps-extended-state' (never used), `8-bit' and `1-bit' (use (featurep
'xemacs) instead). Use `with-temp-buffer' and let-bind vars after
changing buffer, so we don't have to setq them again afterwards.
(c-lang-const): Remove redundant symbolp assertions.
(c-find-assignment-for-mode): Use `or'.
* lisp/Makefile.in (compile-one-process): Remove cc-mode dependency.
(electric-indent-mode): Fix accordingly.
* lisp/progmodes/cc-mode.el (c-initialize-cc-mode): Only hook into
electric-indent-mode-hook if we obey electric-indent-mode.
(c-basic-common-init): Use (fboundp 'electric-indent-local-mode) to
decide whether we obey electric-indent-mode.
(c-change-set-fl-decl-start, c-extend-after-change-region):
Silence warnings.
(c-electric-indent-mode-hook): Assume we do want to obey
electric-indent-mode.
* progmodes/cc-mode.el (c-initialize-cc-mode): add CC Mode hooks
to electric-indent-{,local-}-mode.
(c-basic-common-init): Set electric-indent-inhibit. Initialise
c-electric-flag from electric-indent-mode.
(c-electric-indent-mode-hook, c-electric-indent-local-mode-hook):
New hook functions which propagate electric-indent-mode to CC Mode.
* progmodes/cc-cmds.el (c-toggle-electric-state): When C-c C-l is
hit, toggle electric-indent-local-moode.
* electric.el (electric-indent-mode-has-been-called): New variable.
* lisp/mail/reporter.el (reporter-dump-variable): In case of void-variable,
do not mess with mail-buffer position (fixes 2009-11-03 change).
* lisp/progmodes/cc-mode.el (c-submit-bug-report):
Check auto-fill-mode is bound.
Fixes: debbugs:16592
Cf http://lists.gnu.org/archive/html/emacs-devel/2005-08/msg00472.html
* lisp/files.el (interpreter-mode-alist): Convert to regexps.
(set-auto-mode): Adapt for this.
* lisp/progmodes/cperl-mode.el (cperl-clobber-mode-lists):
Comment out unused variable.
* lisp/progmodes/cc-mode.el (interpreter-mode-alist):
* lisp/progmodes/python.el (interpreter-mode-alist):
* lisp/progmodes/ruby-mode.el (interpreter-mode-alist): Convert to regexps.
* lisp/progmodes/sh-script.el (sh-set-shell):
No longer use interpreter-mode-alist to get list of shells.
* etc/NEWS: Mention this.
Fixes: debbugs:15306
