Re: new compile.el

[Reto Zimmermann <Reto.Zimmermann@synopsys.com>]

>>>>How do I transition a major mode (vhdl-mode) to use the new
>>>>compile.el? From reading the compilation-error-regexp-alist
>>>>description it sounds like it should still work with the old alist
>>>>but then it doesn't work right.
>>>
>>>It should work.  Give us more details of the problems you encountered.
>>
>>Only error messages with a certain syntax ("<filename>:<linenumber>:") are
>>found and highlighted, but not others which should also match regexps
>>defined in the alist.  Just as if only one regexp from (the middle) of the
>>alist is active.  The same alist highlighted all errors with the old
>>compile.el.
> 
> 
> How do you set the alist?  With the new code, the alist is not used
> directly, but instead it's "compiled" to a set of font-lock-keywords
> rules, so if you change it after "compilation" it won't take effect.

The alist is assigned before the first time "compile" is called.  So not 
at startup but only when the user calls "compile" for the first time.

Reto