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| -rw-r--r-- | lispref/tips.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lispref/tips.texi b/lispref/tips.texi index 1e50f672d1d..f6e240c9c41 100644 --- a/lispref/tips.texi +++ b/lispref/tips.texi @@ -74,6 +74,16 @@ If you define a major mode, make sure to run a hook variable using @code{run-hooks}, just as the existing major modes do. @xref{Hooks}. @item +If the purpose of a function is to tell you whether a certain condition +is true or false, give the function a name that ends in @samp{p}. If +the name is one word, add just @samp{p}; if the name is multiple words, +add @samp{-p}. Examples are @code{framep} and @code{frame-live-p}. + +@item +If a user option variable records a true-or-false condition, give it a +name that ends in @samp{-flag}. + +@item Please do not define @kbd{C-c @var{letter}} as a key in your major modes. These sequences are reserved for users; they are the @strong{only} sequences reserved for users, so we cannot do without |