* lisp/subr.el (define-error): New function.

* doc/lispref/control.texi (Signaling Errors): Refer to define-error.
(Error Symbols): Add `define-error'.
* doc/lispref/errors.texi (Standard Errors): Don't refer to `error-conditions'.
* lisp/progmodes/ada-xref.el (ada-error-file-not-found): Rename from
error-file-not-found and define with define-error.
* lisp/emacs-lisp/cl-lib.el (cl-assertion-failed): Move here from subr.el
and define with define-error.
* lisp/userlock.el (file-locked, file-supersession):
* lisp/simple.el (mark-inactive):
* lisp/progmodes/js.el (js-moz-bad-rpc, js-js-error):
* lisp/progmodes/ada-mode.el (ada-mode-errors):
* lisp/play/life.el (life-extinct):
* lisp/nxml/xsd-regexp.el (xsdre-invalid-regexp, xsdre-parse-error):
* lisp/nxml/xmltok.el (xmltok-markup-declaration-parse-error):
* lisp/nxml/rng-util.el (rng-error):
* lisp/nxml/rng-uri.el (rng-uri-error):
* lisp/nxml/rng-match.el (rng-compile-error):
* lisp/nxml/rng-cmpct.el (rng-c-incorrect-schema):
* lisp/nxml/nxml-util.el (nxml-error, nxml-file-parse-error):
* lisp/nxml/nxml-rap.el (nxml-scan-error):
* lisp/nxml/nxml-outln.el (nxml-outline-error):
* lisp/net/soap-client.el (soap-error):
* lisp/net/gnutls.el (gnutls-error):
* lisp/net/ange-ftp.el (ftp-error):
* lisp/mpc.el (mpc-proc-error):
* lisp/json.el (json-error, json-readtable-error, json-unknown-keyword)
(json-number-format, json-string-escape, json-string-format)
(json-key-format, json-object-format):
* lisp/jka-compr.el (compression-error):
* lisp/international/quail.el (quail-error):
* lisp/international/kkc.el (kkc-error):
* lisp/emacs-lisp/ert.el (ert-test-failed):
* lisp/calc/calc.el (calc-error, inexact-result, math-overflow)
(math-underflow):
* lisp/bookmark.el (bookmark-error-no-filename):
* lisp/epg.el (epg-error): Define with define-error.

1 files changed, 4 insertions, 7 deletions

diff --git a/doc/lispref/errors.texi b/doc/lispref/errors.texi
index 87cfcfa532c..8a10fbf0c47 100644
--- a/doc/lispref/errors.texi
+++ b/doc/lispref/errors.texi
@@ -7,12 +7,11 @@
 @appendix Standard Errors
 @cindex standard errors
 
-  Here is a list of the more important error symbols in standard Emacs,
-grouped by concept.  The list includes each symbol's message (on the
-@code{error-message} property of the symbol) and a cross reference to a
-description of how the error can occur.
+  Here is a list of the more important error symbols in standard Emacs, grouped
+by concept.  The list includes each symbol's message and a cross reference
+to a description of how the error can occur.
 
-  Each error symbol has an @code{error-conditions} property that is a
+  Each error symbol has an set of parent error conditions that is a
 list of symbols.  Normally this list includes the error symbol itself
 and the symbol @code{error}.  Occasionally it includes additional
 symbols, which are intermediate classifications, narrower than
@@ -24,8 +23,6 @@ conditions, that means it has none.
   As a special exception, the error symbol @code{quit} does not have the
 condition @code{error}, because quitting is not considered an error.
 
-@c You can grep for "(put 'foo 'error-conditions ...) to find
-@c examples defined in Lisp.  E.g., soap-client.el, sasl.el.
   Most of these error symbols are defined in C (mainly @file{data.c}),
 but some are defined in Lisp.  For example, the file @file{userlock.el}
 defines the @code{file-locked} and @code{file-supersession} errors.