diff options
author | Chong Yidong <[email protected]> | 2009-03-28 13:49:57 +0000 |
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committer | Chong Yidong <[email protected]> | 2009-03-28 13:49:57 +0000 |
commit | c986813b273acbeec45cb03210e51644d048235b (patch) | |
tree | 027072a56a3a5ed9fef21dedd8f798afa50b5c89 /doc/lispref/modes.texi | |
parent | 31c9eebb5aeba0e15554b3cf904b4f04102ff7ce (diff) |
(Derived Modes): Note that define-derive-mode sets the mode-class
property.
Diffstat (limited to 'doc/lispref/modes.texi')
-rw-r--r-- | doc/lispref/modes.texi | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/doc/lispref/modes.texi b/doc/lispref/modes.texi index 4fa843e674..cd923e8fe4 100644 --- a/doc/lispref/modes.texi +++ b/doc/lispref/modes.texi @@ -738,7 +738,7 @@ documentation of the major mode. one. An easy way to do this is to use @code{define-derived-mode}. @defmac define-derived-mode variant parent name docstring keyword-args@dots{} body@dots{} -This construct defines @var{variant} as a major mode command, using +This macro defines @var{variant} as a major mode command, using @var{name} as the string form of the mode name. @var{variant} and @var{parent} should be unquoted symbols. @@ -776,6 +776,12 @@ In addition, you can specify how to override other aspects of evaluates the forms in @var{body} after setting up all its usual overrides, just before running the mode hooks. +If @var{parent} has a non-@code{nil} @code{mode-class} symbol +property, then @code{define-derived-mode} sets the @code{mode-class} +property of @var{variant} to the same value. This ensures, for +example, that if @var{parent} is a special mode, then @var{variant} is +also a special mode (@pxref{Major Mode Conventions}). + You can also specify @code{nil} for @var{parent}. This gives the new mode no parent. Then @code{define-derived-mode} behaves as described above, but, of course, omits all actions connected with @var{parent}. |