Check if buffername is equal to file name

Question

I'm trying to autoexport a file from orgmode to html, so I decided to make a function to check the major mode of the buffer and check if the buffer has open the file that I want to export but when I try it the function export all the orgmode files and not the one that I want.

Here is the code:

(defun org-mode-export-hook()
"Auto export html"
(when (eq major-mode 'org-mode)
    (when (eq buffer-file-name "/home/rafa/org/to-read.org")
        (org-twbs-export-to-html t))))

Can anyone tell me what I'm doing wrong??

Learn to indent your code. You'll notice that the second condition is ignored, as its closing parenthesis goes before the export. — choroba, Jan 22 '17 at 14:29
sorry I was writing from my phone and indent not works well, here it's my real function. — rafaelleru, Jan 22 '17 at 15:10
You may want t consider using ’derived-mode-p’ instead of testing with eq. — YoungFrog, Feb 01 '17 at 06:37

Drew · Accepted Answer · 2017-01-22T15:55:25.373

First, you don't want to test string-content equality using eq. Use equal instead. Or you can use string-equal, if you are sure that buffer-file-name will return a string in your context.

See the Elisp manual, nodes Equality Predicates and Text Comparison.

Second, consider using function buffer-file-name instead of variable buffer-file-name. Not necessary, but a good habit, IMO. (And you can use it in other contexts, where you pass a BUFFER argument.)

Third, you might need/want to use function buffer-file-truename instead of buffer-file-name.

Only the first is important, probably: You cannot test string content using eq.

Check if buffername is equal to file name

1 Answers1