Short summary

Check upstream for more details.

• Fix DEL key behavior
• • Spawn a sub-process for running GCC also in batch mode (bug#45056)
• • Unify common fallback exit point in `comp-cstr-union-1-no-mem'.
• Couple of `comp-cstr-union-1-no-mem' improvements for mixed neg pos union
• Print a backtrace on unhandled errors in batch mode (Bug#44942).
• Improve error message text of "C-x C-SPC"
• Make Tramp scripts more unique and robust
• Unicode integrals in Calc
• Avoid modifying nnimap user option in spam.el
• Prefer setq-local in several progmodes
• Prefer setq-local in emulation/*.el
• Prefer setq-local in url/*.el
• • Memoize `comp-cstr-union-1'
• More improvements to `comp-cstr-union-1' for mixed positive/negative cases
• • Fix `comp-cstr-to-type-spec'
• Fix union of homogeneously negated input constraints
• • Add `with-comp-cstr-accessors' macro.
• Initial support for union of negated constraints
• Initial constraint negation support
• • lisp/progmodes/perl-mode.el: Fix handling of s'foo'bar'
• Prefer setq-local in play/*.el
• Fix last change to shell-command
• Prefer setq-local in mail/*.el
• Prefer setq-local in vc/*.el
• Always show the summary
• Fontify the group and the line number
• Hide the common parent directory, if any
• xref--show-defs-minibuffer: new "show definitions" UI
• • Do not compile comp-cstr.el in vanilla builds
• Vanilla build warning clean-up
• • Fix `load-history' causing a number of spurious compiler warnings
• Improve docstrings
• Prefer setq-local in emacs-lisp/*.el
• Prefer setq-local in net/*.el
• Speed up match-substitute-replacement
• Prefer setq-local in cedet
• Prefer setq-local in most of textmodes/*.el
• Don't abort when terminated by SIGINT in -batch
• Make custom-data saving atomic
• Allow viper-save-setting to save numerical settings
• Clarify icomplete-show-matches-on-no-input doc string
• Prefer setq-local in erc
• Make shell-command use comint settings
• Prefer setq-local in eshell
• Preload iso-trans.el
• Support using ripgrep in project-find-regexp and friends
• • Reduce (half) the number of loads emitted for calling into C code
• ; Fix last change
• Restore nnimap-split-download-body as a customization option
• Define explicit-shell-file-name only in shell.el
• Add tests for several byte-compiler warnings
• Avoid spamming view-mode-enter help message
• Fix auto-revert-test07-auto-revert-several-buffers
• Improve performance of auto-revert-notify-add-watch
• Remove redundant requires of 'help'
• Remove redundant requires of 'button'
• Fix "grep foo bar" in eshell
• Don't make grep arguments invisible in eshell
• Recompute error positions in python-shell-send-region
• Remove redundant requires of 'custom'
• Remove redundant requires of 'font-core'
• Remove redundant requires of 'font-lock'
• bibtex-autokey-get-year: Allow both a year or date field.
• bibtex-mode: do not fail when local variables are disabled
• Allow bibtex-contline-indentation as file-local variable.
• Remove redundant requires of faces
• Remove redundant requires of env
• Allow bibtex-unify-case-function as file-local variable
• Add test to autorevert-tests.el
• Improve sectioning in bytecomp-tests.el
• Make variable cperl-version obsolete
• Remove some Emacs 19 compat code from cperl-mode
• Remove some references to fast-lock and lazy-lock
• Fix alignment of declaractions of arrays
• • INSTALL: Add the installation command of development packages for FreeBSD.
• Fix xsdre-range-list-to-char-alternative problem with {P}
• Fix the message-fetch-field doc string
• Remove specific byte-compiler warnings for cl.el
• Improve .gitignore and project-vc-ignores handling
• Use project--value-in-dir
• Fix documentation of window-in-direction arg MINIBUF (bug#44932)