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| author | Paul Eggert <eggert@cs.ucla.edu> | 2013-07-23 08:22:16 +0100 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2013-07-23 08:22:16 +0100 |
| commit | f274311c2cad468abbe4bdbb25362e2fe6ccb5c2 (patch) | |
| tree | 7268693504863b47ec342b5d63b95198382f142d /etc/NEWS | |
| parent | a048c2955c000241dceba39112c3cb7c3d27b647 (diff) | |
| download | emacs-f274311c2cad468abbe4bdbb25362e2fe6ccb5c2.tar.gz | |
* eval.c (Fprogn): Check that BODY is a proper list.
Diffstat (limited to 'etc/NEWS')
| -rw-r--r-- | etc/NEWS | 8 |
1 files changed, 8 insertions, 0 deletions
@@ -538,6 +538,14 @@ file using `set-file-extended-attributes'. ** `visited-file-modtime' now returns -1 for nonexistent files. Formerly it returned a list (-1 LOW USEC PSEC), but this was ambiguous in the presence of files with negative time stamps. + +** Special forms with implied progn now check for proper lists. +Starting in Emacs 21.4, a special form with an implied progn of an +improper list ignored the trailing value, treating it as nil. For +example, (cond (t (message "hello") . "there")) ignored the "there". +This inadvertent change to Emacs's behavior has been reverted, and +Emacs now signals an error for these improper forms, as it did in +version 21.3 and earlier. * Lisp Changes in Emacs 24.4 |