mirror/emacs
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/emacs.git synced 2025-02-05 20:43:08 +00:00
Code Issues Releases Activity

Remove references to very old versions of Emacs from eintr

Browse Source 
* doc/lispintro/emacs-lisp-intro.texi (Making Errors)
(Void Function, Void Variable, Wrong Type of Argument, debug)
(debug-on-entry): Remove commented out references to Emacs 20 or
earlier.
* doc/lispintro/emacs-lisp-intro.texi (what-line)
(print-elements-of-list, debug, X Axis Tic Marks): Don't call version
22 or earlier a "recent" version of Emacs.
This commit is contained in:
Stefan Kangas 2021-04-02 19:32:32 +02:00
parent b65a1cfed7
commit 74a86c1acf
1 changed files with 12 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

96
doc/lispintro/emacs-lisp-intro.texi
View File

@ -1364,19 +1364,6 @@ C-e}:
(this is an unquoted list)
@end smallexample
@ignore
@noindent
What you see depends on which version of Emacs you are running. GNU
Emacs version 22 provides more information than version 20 and before.
First, the more recent result of generating an error; then the
earlier, version 20 result.
@need 1250
@noindent
In GNU Emacs version 22, a @file{*Backtrace*} window will open up and
you will see the following in it:
@end ignore
A @file{*Backtrace*} window will open up and you should see the
following in it:
@ -1838,19 +1825,6 @@ Debugger entered--Lisp error: (void-function fill-column)
(Remember, to quit the debugger and make the debugger window go away,
type @kbd{q} in the @file{*Backtrace*} buffer.)
@ignore
@need 800
In GNU Emacs 20 and before, you will produce an error message that says:
@smallexample
Symbol's function definition is void:@: fill-column
@end smallexample
@noindent
(The message will go away as soon as you move the cursor or type
another key.)
@end ignore
@node Void Variable
@subsection Error Message for a Symbol Without a Value
@cindex Symbol without value error
@ -1907,18 +1881,6 @@ Since @code{+} does not have a value bound to it, just the function
definition, the error message reported that the symbol's value as a
variable was void.
@ignore
@need 800
In GNU Emacs version 20 and before, your error message will say:
@example
Symbol's value as variable is void:@: +
@end example
@noindent
The meaning is the same as in GNU Emacs 22.
@end ignore
@node Arguments
@section Arguments
@cindex Arguments
@ -2197,19 +2159,6 @@ addition had been passed the correct type of object, the value passed
would have been a number, such as 37, rather than a symbol like
@code{hello}. But then you would not have got the error message.
@ignore
@need 1250
In GNU Emacs version 20 and before, the echo area displays an error
message that says:
@smallexample
Wrong type argument:@: number-or-marker-p, hello
@end smallexample
This says, in different words, the same as the top line of the
@file{*Backtrace*} buffer.
@end ignore
@node message
@subsection The @code{message} Function
@findex message
@ -6663,9 +6612,9 @@ original text of the function:
@end group
@end smallexample
(In recent versions of GNU Emacs, the @code{what-line} function has
(In modern versions of GNU Emacs, the @code{what-line} function has
been expanded to tell you your line number in a narrowed buffer as
well as your line number in a widened buffer. The recent version is
well as your line number in a widened buffer. The modern version is
more complex than the version shown here. If you feel adventurous,
you might want to look at it after figuring out how this version
works. You will probably need to use @kbd{C-h f}
@ -10392,9 +10341,8 @@ echo area: @code{^Jgazelle^J^Jgiraffe^J^Jlion^J^Jtiger^Jnil}, in which
each @samp{^J} stands for a newline.)
@need 1500
In a recent instance of GNU Emacs, you can evaluate these expressions
directly in the Info buffer, and the echo area will grow to show the
results.
You can evaluate these expressions directly in the Info buffer, and
the echo area will grow to show the results.
@smallexample
@group
@ -18104,8 +18052,7 @@ argument of 4:
@end smallexample
@noindent
In a recent GNU Emacs, you will create and enter a @file{*Backtrace*}
buffer that says:
This will create and enter a @file{*Backtrace*} buffer that says:
@noindent
@smallexample
@ -18139,25 +18086,12 @@ In practice, for a bug as simple as this, the Lisp error line will
tell you what you need to know to correct the definition. The
function @code{1=} is void.
@ignore
@need 800
In GNU Emacs 20 and before, you will see:
@smallexample
Symbol's function definition is void:@: 1=
@end smallexample
@noindent
which has the same meaning as the @file{*Backtrace*} buffer line in
version 21.
@end ignore
However, suppose you are not quite certain what is going on?
You can read the complete backtrace.
In this case, you need to run a recent GNU Emacs, which automatically
starts the debugger that puts you in the @file{*Backtrace*} buffer; or
else, you need to start the debugger manually as described below.
Emacs automatically starts the debugger that puts you in the
@file{*Backtrace*} buffer. You can also start the debugger manually
as described below.
Read the @file{*Backtrace*} buffer from the bottom up; it tells you
what Emacs did that led to the error. Emacs made an interactive call
@ -18197,14 +18131,8 @@ then run your test again.
@section @code{debug-on-entry}
@findex debug-on-entry
A recent GNU Emacs starts the debugger automatically when your
function has an error.
@ignore
GNU Emacs version 20 and before did not; it simply
presented you with an error message. You had to start the debugger
manually.
@end ignore
Emacs starts the debugger automatically when your function has an
error.
Incidentally, you can start the debugger manually for all versions of
Emacs; the advantage is that the debugger runs even if you do not have
@ -20079,8 +20007,8 @@ the tic marks themselves and their spacing:
@code{defvar}. The @code{boundp} predicate checks whether it has
already been set; @code{boundp} returns @code{nil} if it has not. If
@code{graph-blank} were unbound and we did not use this conditional
construction, in a recent GNU Emacs, we would enter the debugger and
see an error message saying @samp{@w{Debugger entered--Lisp error:}
construction, we would enter the debugger and see an error message
saying @samp{@w{Debugger entered--Lisp error:}
@w{(void-variable graph-blank)}}.)
@need 1200