Zero-length strings are just 'empty'; 'null' can be confusing in several
ways.
* lisp/subr.el (split-string, string-lines):
* doc/lispref/strings.texi (Creating Strings):
Change argument names from 'omit-nulls' to 'omit-empty'.
* doc/lispref/strings.texi (Creating Strings):
* lisp/subr.el (split-string):
Make it clear that the SEPARATORS argument should not match the empty
string, since the behaviour was entirely an artefact of the original
implementation in this case; it makes little sense otherwise.
Clean up the examples for conciseness and do not waste space on
irrelevant details.
These produce the binary representation of a number.
'%#b' and '%#B' prefix with '0b' and '0B', respectively.
(bug#79990)
* etc/NEWS: Announce change.
* doc/lispref/strings.texi (Formatting Strings): Describe new format
specs and add to comment on reconstructing the value with 'read'.
* src/editfns.c (format): Update doc string.
(styled_format): Add support for '%b' and '%B'. To remain
portable, avoid use of 'sprintf' by converting by hand.
* test/src/editfns-tests.el (format-binary-zero, format-binary-floats)
(format-binary-nonzero-integers): Add tests.
(read-large-integer): Add binary test cases.
Co-authored-by: Paul Eggert <eggert@cs.ucla.edu>
This experimental variable caused more trouble than it cured:
it was rarely used, and when used it tended to be used incorrectly.
* src/editfns.c (binary-as-unsigned): Remove. All uses removed.
Only allow string mutation that is certain not to require string data to
be resized and reallocated: writing bytes into a unibyte string, and
changing ASCII to ASCII in a multibyte string.
This ensures that mutation will never transform a unibyte string to
multibyte, that the size of a string in bytes never changes, and that
the byte offsets of characters remain the same. Most importantly, it
removes a long-standing obstacle to reform of string representation and
allow for future performance improvements.
* src/data.c (Faset): Disallow resizing string mutation.
* src/fns.c (clear_string_char_byte_cache):
* src/alloc.c (resize_string_data): Remove.
* test/src/data-tests.el (data-aset-string): New test.
* test/lisp/subr-tests.el (subr--subst-char-in-string):
Skip error cases.
* test/src/alloc-tests.el (aset-nbytes-change):
Remove test that is no longer relevant.
* doc/lispref/strings.texi (Modifying Strings):
* doc/lispref/sequences.texi (Array Functions):
* doc/lispref/text.texi (Substitution): Update manual.
* etc/NEWS: Announce.
* src/fns.c (Fclear_string): Fix crash by clearing all text
properties. (Bug#75581)
* doc/lispref/strings.texi (Modifying Strings): Document the above
behavior change.
Fix proposed by Andreas Schwab <schwab@linux-m68k.org>.
679f7ccc49 Prevent accesses to /content files without a GUI connection
f0a7eec5a7 * lisp/net/tramp-integration.el (shortdoc): Use `tramp--w...
fb642d9cf5 Merge branch 'emacs-30' of git.savannah.gnu.org:/srv/git/...
f1e37ae423 Avoid crashes in very large buffers with long lines
4dc9e99349 Update description of string comparison functions
3817355aed Add sanity check when adding Tramp functions to shortdoc
1bbb322017 ; * lisp/erc/erc-fill.el (erc-fill-wrap-mode): Doc fix.
3f6e7e1da6 js-ts-mode: Make jsdoc's "description" block a comment (b...
1c7e00f4f6 Also condition cjk-misc font-spec on Android
b89d65df5f ; * etc/PROBLEMS: How to install sources on SUSE Linux (b...
729b17c202 ; * src/lread.c (Fload): Add comment. (Bug#72433)
bfb1aee998 Fix ':defer nil' in 'use-package'
d787817076 Document unsupported color Emoji on OpenBSD
db1f749db5 Fix regressions in Customize caused by 'widget-unselected...
f94d58008e Avoid inserting extra space in SVG data
292fcd2009 Fix c-ts-common filling function (bug#71760)
e50d597f45 Fix missing type checks before specbind
# Conflicts:
# lisp/progmodes/c-ts-common.el
* doc/lispref/strings.texi (Text Comparison): Swap descriptions of
'string-equal' (the function) and 'string=' (its alias). Same for
'string-lessp' and 'string<'. Document 'string>'. (Bug#72486)
* doc/lispref/sequences.texi (Sequence Functions): Update cross
reference to 'string-lessp'.
It's a general-purpose polymorphic ordering function, like `<` but
for any two values of the same type.
* src/data.c (syms_of_data): Add the `type-mismatch` error.
(bits_word_to_host_endian): Move...
* src/lisp.h (bits_word_to_host_endian): ...here, and declare inline.
* src/fns.c (Fstring_lessp): Extract the bulk of this function to...
(string_cmp): ...this 3-way comparison function, for use elsewhere.
(bool_vector_cmp, value_cmp, Fvaluelt): New.
* lisp/emacs-lisp/byte-opt.el (side-effect-free-fns, pure-fns):
Add `value<`, which is pure and side-effect-free.
* test/src/fns-tests.el (fns-value<-ordered, fns-value<-unordered)
(fns-value<-type-mismatch, fns-value<-symbol-with-pos)
(fns-value<-circle, ert-deftest fns-value<-bool-vector): New tests.
* doc/lispref/sequences.texi (Sequence Functions):
* doc/lispref/numbers.texi (Comparison of Numbers):
* doc/lispref/strings.texi (Text Comparison):
Document the new value< function.
* etc/NEWS: Announce.
689f04a2dd Clarify description of format-spec truncation
759dedfab0 More accurate documentation of 'rmail-mail-new-frame'
fa79de7c6b ; * lisp/calendar/calendar.el: Remove extra space.
7f6e335f4b Fix documentation of M-SPC in user manual
5bdc2436c6 ; * lisp/emacs-lisp/cl-macs.el (cl-labels): Fix stray dif...
8014dbb2ad * admin/notes/bugtracker: Minor copyedit.
06a991e7e8 ; * admin/notes/bugtracker: Minor copyedit.
c890622e1a Tweak regexp for object initializers in csharp-mode (bug#...
f48babb112 `term-mode': mention the keymap to add keybindings to
8cf05d9be1 Fix 'shortdoc-copy-function-as-kill'
d5901f3f05 Improve documentation of 'edebug-print-*' variables
* doc/lispref/strings.texi (Custom Format Strings): Mention that
precision specifier affects both '<' and '>' truncation (bug#69822).
* lisp/format-spec.el (format-spec, format-spec--do-flags): Use same
terminology as 'format', especially when referring to its behavior.
In some programming languages and styles, a symbol (or every
symbol in a sequence of symbols) might be capitalized, but the
individual words making up the symbol should never be capitalized.
For example, in OCaml, type names Look_like_this and variable names
look_like_this, but it is basically never correct for something to
Look_Like_This. And one might have "aa_bb cc_dd ee_ff" or "Aa_bb
Cc_dd Ee_ff", but never "Aa_Bb Cc_Dd Ee_Ff".
To support this, the new variable 'case-symbols-as-words' causes
symbol constituents to be treated as part of words only for case
operations.
* src/casefiddle.c (case_ch_is_word): New function.
(case_character_impl, case_character): Use 'case_ch_is_word'.
(syms_of_casefiddle): Define 'case-symbols-as-words'.
* src/search.c (Freplace_match): Use 'case-symbols-as-words'
when calculating case pattern.
* test/src/casefiddle-tests.el (casefiddle-tests--check-syms)
(casefiddle-case-symbols-as-words): Test 'case-symbols-as-words'.
* etc/NEWS: Announce 'case-symbols-as-words'.
* doc/lispref/strings.texi (Case Conversion): Document
'case-symbols-as-words'.
(Bug#66614)
* lisp/format-spec.el (format-spec): Accept a function producing the
substitution for a character.
* doc/lispref/strings.texi (Custom Format Strings): Document the
above change.
* test/lisp/format-spec-tests.el (format-spec/function): New test.
Ref. https://lists.gnu.org/r/emacs-devel/2022-09/msg01875.html
