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210 lines
5.8 KiB
Plaintext
210 lines
5.8 KiB
Plaintext
@c -*-texinfo-*-
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@c This is part of the GNU Emacs Lisp Reference Manual.
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@c Copyright (C) 1990, 1991, 1992, 1993, 1999, 2001, 2002, 2003, 2004,
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@c 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
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@c See the file elisp.texi for copying conditions.
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@setfilename ../info/errors
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@node Standard Errors, Standard Buffer-Local Variables, GNU Emacs Internals, Top
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@appendix Standard Errors
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@cindex standard errors
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Here is the complete list of the error symbols in standard Emacs,
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grouped by concept. The list includes each symbol's message (on the
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@code{error-message} property of the symbol) and a cross reference to a
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description of how the error can occur.
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Each error symbol has an @code{error-conditions} property that is a
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list of symbols. Normally this list includes the error symbol itself
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and the symbol @code{error}. Occasionally it includes additional
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symbols, which are intermediate classifications, narrower than
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@code{error} but broader than a single error symbol. For example, all
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the errors in accessing files have the condition @code{file-error}. If
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we do not say here that a certain error symbol has additional error
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conditions, that means it has none.
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As a special exception, the error symbol @code{quit} does not have the
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condition @code{error}, because quitting is not considered an error.
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@xref{Errors}, for an explanation of how errors are generated and
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handled.
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@table @code
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@item @var{symbol}
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@var{string}; @var{reference}.
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@item error
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@code{"error"}@*
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@xref{Errors}.
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@item quit
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@code{"Quit"}@*
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@xref{Quitting}.
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@item args-out-of-range
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@code{"Args out of range"}@*
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This happens when trying to access an element beyond the range of a
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sequence or buffer.@*
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@xref{Sequences Arrays Vectors}, @xref{Text}.
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@item arith-error
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@code{"Arithmetic error"}@*
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@xref{Arithmetic Operations}.
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@item beginning-of-buffer
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@code{"Beginning of buffer"}@*
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@xref{Character Motion}.
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@item buffer-read-only
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@code{"Buffer is read-only"}@*
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@xref{Read Only Buffers}.
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@item coding-system-error
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@code{"Invalid coding system"}@*
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@xref{Lisp and Coding Systems}.
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@item cyclic-function-indirection
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@code{"Symbol's chain of function indirections\@* contains a loop"}@*
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@xref{Function Indirection}.
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@item cyclic-variable-indirection
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@code{"Symbol's chain of variable indirections\@* contains a loop"}@*
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@xref{Variable Aliases}.
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@item end-of-buffer
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@code{"End of buffer"}@*
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@xref{Character Motion}.
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@item end-of-file
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@code{"End of file during parsing"}@*
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Note that this is not a subcategory of @code{file-error},
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because it pertains to the Lisp reader, not to file I/O.@*
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@xref{Input Functions}.
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@item file-already-exists
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This is a subcategory of @code{file-error}.@*
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@xref{Writing to Files}.
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@item file-date-error
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This is a subcategory of @code{file-error}. It occurs when
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@code{copy-file} tries and fails to set the last-modification time of
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the output file.@*
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@xref{Changing Files}.
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@item file-error
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We do not list the error-strings of this error and its subcategories,
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because the error message is normally constructed from the data items
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alone when the error condition @code{file-error} is present. Thus,
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the error-strings are not very relevant. However, these error symbols
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do have @code{error-message} properties, and if no data is provided,
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the @code{error-message} property @emph{is} used.@*
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@xref{Files}.
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@item file-locked
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This is a subcategory of @code{file-error}.@*
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@xref{File Locks}.
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@item file-supersession
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This is a subcategory of @code{file-error}.@*
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@xref{Modification Time}.
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@item ftp-error
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This is a subcategory of @code{file-error}, which results from problems
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in accessing a remote file using ftp.@*
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@xref{Remote Files,,, emacs, The GNU Emacs Manual}.
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@item invalid-function
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@code{"Invalid function"}@*
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@xref{Function Indirection}.
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@item invalid-read-syntax
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@code{"Invalid read syntax"}@*
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@xref{Printed Representation}.
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@item invalid-regexp
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@code{"Invalid regexp"}@*
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@xref{Regular Expressions}.
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@item mark-inactive
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@code{"The mark is not active now"}@*
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@xref{The Mark}.
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@item no-catch
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@code{"No catch for tag"}@*
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@xref{Catch and Throw}.
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@item scan-error
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@code{"Scan error"}@*
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This happens when certain syntax-parsing functions
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find invalid syntax or mismatched parentheses.@*
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@xref{List Motion}, and @ref{Parsing Expressions}.
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@item search-failed
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@code{"Search failed"}@*
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@xref{Searching and Matching}.
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@item setting-constant
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@code{"Attempt to set a constant symbol"}@*
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The values of the symbols @code{nil} and @code{t},
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and any symbols that start with @samp{:},
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may not be changed.@*
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@xref{Constant Variables, , Variables that Never Change}.
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@item text-read-only
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@code{"Text is read-only"}@*
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This is a subcategory of @code{buffer-read-only}.@*
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@xref{Special Properties}.
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@item undefined-color
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@code{"Undefined color"}@*
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@xref{Color Names}.
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@item void-function
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@code{"Symbol's function definition is void"}@*
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@xref{Function Cells}.
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@item void-variable
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@code{"Symbol's value as variable is void"}@*
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@xref{Accessing Variables}.
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@item wrong-number-of-arguments
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@code{"Wrong number of arguments"}@*
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@xref{Classifying Lists}.
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@item wrong-type-argument
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@code{"Wrong type argument"}@*
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@xref{Type Predicates}.
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@end table
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These kinds of error, which are classified as special cases of
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@code{arith-error}, can occur on certain systems for invalid use of
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mathematical functions.
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@table @code
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@item domain-error
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@code{"Arithmetic domain error"}@*
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@xref{Math Functions}.
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@item overflow-error
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@code{"Arithmetic overflow error"}@*
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This is a subcategory of @code{domain-error}.@*
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@xref{Math Functions}.
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@item range-error
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@code{"Arithmetic range error"}@*
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@xref{Math Functions}.
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@item singularity-error
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@code{"Arithmetic singularity error"}@*
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This is a subcategory of @code{domain-error}.@*
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@xref{Math Functions}.
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@item underflow-error
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@code{"Arithmetic underflow error"}@*
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This is a subcategory of @code{domain-error}.@*
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@xref{Math Functions}.
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@end table
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@ignore
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arch-tag: 717c6048-5d9d-4c7d-9a62-df57390b6f19
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@end ignore
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