Alan Schmitt <alan.schm...@polytechnique.org> writes: > On 2014-04-29 12:30, Samuel Loury <konubi...@gmail.com> writes: >> Alan Schmitt <alan.schm...@polytechnique.org> writes: >>> On 2014-04-28 19:18, Rene <jl...@yahoo.com> writes: >>> I have not defined an Energy property, but I recently played with date >>> properties (and a user defined sorting function). If it's helpful to >>> you, the code is there: >>> https://github.com/brabalan/org-review/blob/master/org-review.el#L156 >> I looked at the code and I don't get what means the part of the code >> getting the org-marker text property of a: >> (get-text-property (point-min) 'org-marker a) >> In this part, the point-min returns the point-min of the current buffer >> (the agenda buffer in that case) while the function looks for the >> property into a. >> >> I tried launching this code into a custom agenda compare function and I >> get the error: >> Args out of range: 1197, 1197 >> This makes sense since the agenda appears to be narrowed at that time so >> that (point-min) returns 1197 and the a string at this time is not 1197 >> characters long. >> >> Replacing (point-min) by 0 appears to work (I assumed the 0th character >> of the string has the wanted text property). > > I used to have `1' instead of `point-min', but I changed it following > a suggestion from Bastien > (http://thread.gmane.org/gmane.emacs.orgmode/85217/focus=85241). Thanks for the link.
I am not a good lisp hacker, so I cannot be sure of this, but I suppose Bastien did not notice the last argument 'a'. Indeed, the function is defined as: --8<---------------cut here---------------start------------->8--- (get-text-property POSITION PROP &optional OBJECT) Return the value of POSITION's property PROP, in OBJECT. OBJECT should be a buffer or a string; if omitted or nil, it defaults to the current buffer. If POSITION is at the end of OBJECT, the value is nil. --8<---------------cut here---------------end--------------->8--- Then, the POSITION argument is the position in OBJECT to look for the property. Therefore, the use of a function related to the current buffer (like point-min) seems to strongly assume that OBJECT is the current buffer (or nil). In that case, OBJECT is not the current buffer but a string called 'a'. Thus, IIUC, it makes no sense to use OBJECT=a and POSITION=(point-min). -- Konubinix GPG Key : 7439106A Fingerprint: 5993 BE7A DA65 E2D9 06CE 5C36 75D2 3CED 7439 106A
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