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Diffstat (limited to 'etc')
| -rw-r--r-- | etc/NEWS | 15 |
1 files changed, 15 insertions, 0 deletions
@@ -443,6 +443,21 @@ simplified away. This warning can be suppressed using 'with-suppressed-warnings' with the warning name 'suspicious'. +--- +*** Warn about more ignored function return values. +The compiler now warns when the return value from certain functions is +ignored. Example: + + (progn (nreverse my-list) my-list) + +will elicit a warning because it is usually pointless to call +'nreverse' on a list without using the returned value. To silence the +warning, make use of the value in some way, such as assigning it to a +variable. You can also wrap the function call in '(ignore ...)'. + +This warning can be suppressed using 'with-suppressed-warnings' with +the warning name 'ignored-return-value'. + +++ ** New function 'file-user-uid'. This function is like 'user-uid', but is aware of file name handlers, |