Read csv with custom delimiter

I’m trying to read a csv file with ‘#’ as delimiter I haven’t found anyway to specify this in the read function.

Is this possible?

[SheetJSDev]

The DSV reader follows Excel rules. For a delimiter other than the standard comma or tab or semicolon, your file should start with sep= followed by the separator character. You can verify this manually in Excel.

This file will have 2 cells:

1#2#3
4#5#6

This file will have 6 cells:

sep=#
1#2#3
4#5#6

There currently is no override but it is fairly straightforward to add one and we would accept a PR if you are interested. To be consistent with the writer, the option should be called FS. https://github.com/SheetJS/js-xlsx/blob/master/bits/40_harb.js#L770 is where the delimiter is determined, and the check should apply after the sep override:

		if(str.slice(0,4) == "sep=" && str.charCodeAt(5) == 10) { sep = str.charAt(4); str = str.slice(6); }
+		else if(o.FS) sep = o.FS;
		else sep = guess_sep(str.slice(0,1024));

[garrettluu]

Upon a deeper look at this issue i can see that the code is checking if there is the char code for a new line present at position 5, this is looking for the char code 10 - whereas my file has a char code of 13 for the new line

@louisjacksonrees this bug was fixed in this PR: #2004