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logical01 parameter may prevent column name detection #2735

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logical01 parameter may prevent column name detection#2735
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bugfread
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v1.11.0

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@st-pasha
st-pasha
opened on Apr 11, 2018

This behavior is correct:

> fread(",A,B\n1,0,1\n2,0,1\n3,1,1\n")
      V1     A     B
   <int> <int> <int>
1:     1     0     1
2:     2     0     1
3:     3     1     1

However if I use logical01=TRUE, suddenly column names stop being recognized:

> fread(",A,B\n1,0,1\n2,0,1\n3,1,1\n", logical01=TRUE)
      V1     V2     V3
   <int> <char> <char>
1:    NA      A      B
2:     1      0      1
3:     2      0      1
4:     3      1      1

(explicitly setting header = TRUE fixes this but shouldn't be necessary)

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  1. st-pasha
    added
    bug
    fread
    on Apr 11, 2018
  2. st-pasha
    added this to the milestone on Apr 11, 2018
  3. mattdowle
    added a commit that references this issue on Apr 12, 2018

    Column name detection when logical01=TRUE, #2735

    6788de7
  4. mattdowle
    closed this as completedin #2742on Apr 13, 2018
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