Re: [BUG] org-agenda-skip fails in batch mode because comment-start-skip is nil

[Ihor Radchenko <yantar92@gmail.com>]

Asilata Bapat <asilata@gmail.com> writes:

> When org-scan-tags runs in a batch mode invocation, the value of the variable comment-start-skip is nil even while scanning an org file. The function org-scan-tags calls (org-agenda-skip), which in turn calls (looking-at comment-start-skip). Since the value of comment-start-skip is nil, it triggers the error (wrong-type-argument stringp nil).
> To fix this, the function org-agenda-skip should ensure that the variable comment-start-skip is set to the appropriate value.

Could you please provide a detailed reproducer?

> 2. The issue can indeed be fixed, e.g., by changing the source of org-agenda-skip to invoke (org-mode) immediately before the let statement. Doing this presumably sets the variable comment-start-skip to the expected value, and the invocation succeeds.

org-agenda-skip should be operating after org-agenda-prepare-buffers,
which, in turn, should call org-mode. org-mode calls
org-setup-comments-handling which must set comment-start-skip to
non-nil.

Best,
Ihor