Working in PHP languages with HTML is a daily task.
In the first instance I tried to combine its syntax with multi-web-mode but it consumed a lot of resources.
In the second instance I made the language reader using mmm-mode, reading php-mode in web mode.
However this has not been enough because the color problems between modes produce bugs.
Now only the web-mode for PHP works, and I have managed to activate PHP flycheck for web-mode.
The value of the sexp you passed as its second arg is the symbol delete-trailing-whitespace,
because the arg to when is a non-nil list (because you quoted it). So the when condition is always true.
And you never invoke function delete-trailing-whitespace; you just return the symbol that names that function.
Note:
You can find what face is applied to text a number of ways.
If you can get your cursor on the text.
You can use M-x describe-face which will give you a default option of the current face.
Or you can use M-x describe-char which will tell you what face is applied.
You can customize faces through the customize feature or with elisp.
If you can't get your cursor on the face, try finding the face using customize-group,
list-faces-display or by reading the packages code.
when this default mode is used in files of more than 15000 lines of code
it freeze!, is better to look at the file without the guidelines
and then activate this mode.
Emacs Code Browser (Navegador de Código de Emacs, on spanish).
We present a configuration of windows in which will include a
browser of files and directories, a browser of objects within
our code and a history in addition to the window of our code.
The diminish mode is activated, which helps us to keep the modeline clean.
As we see, in the modeline the modes that are activated are shown, and every time
we have more activated minor-modes, which add small functionalities to Emacs.
In this case, there are many modes, that if they do not appear, nothing happens.
So we hide some, like undo-tree that will always be activated.
