write_csv does not write output correctly

[xuqingyu]

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I am writing a column-combined data (say three 500*100 matrices), but write_csv repeats the first one matrix three times in the output.csv.

reprex(
library(tidyverse);
set.seed(100)
temp1 <- data.frame(matrix(rnorm(8760*100),nrow = 8760, ncol = 100));
temp2 <- data.frame(matrix(rnorm(8760*100,200),nrow = 8760, ncol = 100));
temp3 <- data.frame(matrix(rnorm(8760*100,300),nrow = 8760, ncol = 100));
temp4 <- cbind(temp1,temp2,temp3);
write_csv(temp4, './test.csv'))

[xuqingyu]

Well, I did a little troubleshooting on my end.
It looks like that write_csv requires that the column names to be unique? I make new names of temp4 by

colnames(temp4) <- make.names(colnames(temp4),unique = TRUE);

and then write_csv works fine. In contrast, write.csv (the default of R) works fine without making column names unique.

Should this be an issue to be fixed?
Many thanks,

[jimhester]

Writing with duplicated columns was a bug recently introduced by #1009, it is now fixed, so this should now work how you expect.

Thank you for opening the issue and for supplying a reproducible example, it is a big help!

[xuqingyu]

Thank you Jim!