mirror of
git://git.sv.gnu.org/emacs.git
synced 2026-02-16 17:24:23 +00:00
4a56ca5bbf
Optionally treat integers as signed numbers with %o and %x format specifiers, instead of treating them as a machine-dependent two’s complement representation. This option is more machine-independent, allows formats like "#x%x" to be useful for reading later, and is better-insulated for future changes involving bignums. Setting the new variable ‘binary-as-unsigned’ to nil enables the new behavior (Bug#32252). This is a simplified version of the change proposed in: https://lists.gnu.org/r/emacs-devel/2018-07/msg00763.html I simplified that proposal by omitting bitwidth modifiers, as I could not find an any example uses in the Emacs source code that needed them and doing them correctly would have been quite a bit more work for apparently little benefit. * doc/lispref/strings.texi (Formatting Strings): Document that %x and %o format negative integers in a platform-dependent way. Also, document how to format numbers so that the same values can be read back in. * etc/NEWS: Document the change. * src/editfns.c (styled_format): Treat integers as signed numbers even with %o and %x, if binary-as-unsigned is nil. Support the + and space flags with %o and %x, since they’re about signs. (syms_of_editfns): New variable binary-as-unsigned. * test/src/editfns-tests.el (read-large-integer): Test that maximal integers can be read after printing with all integer formats, if binary-as-unsigned is nil. |
||
|---|---|---|
| .. | ||
| regex-resources | ||
| alloc-tests.el | ||
| buffer-tests.el | ||
| callint-tests.el | ||
| callproc-tests.el | ||
| casefiddle-tests.el | ||
| charset-tests.el | ||
| chartab-tests.el | ||
| cmds-tests.el | ||
| coding-tests.el | ||
| data-tests.el | ||
| decompress-tests.el | ||
| doc-tests.el | ||
| editfns-tests.el | ||
| emacs-module-tests.el | ||
| eval-tests.el | ||
| fileio-tests.el | ||
| floatfns-tests.el | ||
| fns-tests.el | ||
| font-tests.el | ||
| inotify-tests.el | ||
| json-tests.el | ||
| keyboard-tests.el | ||
| keymap-tests.el | ||
| lcms-tests.el | ||
| lread-tests.el | ||
| marker-tests.el | ||
| minibuf-tests.el | ||
| print-tests.el | ||
| process-tests.el | ||
| regex-tests.el | ||
| syntax-tests.el | ||
| textprop-tests.el | ||
| thread-tests.el | ||
| undo-tests.el | ||
| xml-tests.el | ||