Why length($0)+1 is the number of characters ? about awk-crashcourse

[freznicek]

Dear Yassine,
thanks for your question,
length($0)+1 assumes single newline character which is not portable as shown below:

[freznicek@quad examples]$ ls word-count.*
word-count.awk  word-count.md 
[freznicek@quad examples]$ cp word-count.md word-count.md.dos
[freznicek@quad examples]$ unix2dos word-count.md.dos
[freznicek@quad examples]$ file word-count.md*
word-count.md:     ASCII text
word-count.md.dos: ASCII text, with CRLF line terminators
[freznicek@quad examples]$ wc word-count.md*
  24   88  575 word-count.md
  24   88  599 word-count.md.dos
  48  176 1174 celkem
[freznicek@quad examples]$ gawk -f word-count.awk word-count.md
24 88 575 word-count.md
[freznicek@quad examples]$ gawk -f word-count.awk word-count.md.dos 
24 95 599 word-count.md.dos

I'm going to address that with a fix.