Syntax error not detected with heredoc <<- redirection operator

[Massedil]

I know this error is a little bit tricky but it happens often when using heredoc <<- redirection operator because space and tabs are not visible in that case.

If the redirection operator is ‘<<-’, then all leading tab characters are stripped from input lines and the line containing delimiter. This allows here-documents within shell scripts to be indented in a natural fashion. Source

1. The error in test_invalid.txt is not detected. There is spaces instead of tabs before EOF.

# bash test_invalid.txt
test_invalid.txt: line 9: warning: here-document at line 5 delimited by end-of-file (wanted `EOF')
test_invalid.txt: line 10: syntax error: unexpected end of file

Expected : There is a parsing error detected.

2. This test_valid.txt is valid but the syntax coloration is wrong.

# bash test_valid.txt
# cat /tmp/file
    spaces before
    EOF
    This text is written inside the /tmp/file.

Expected : This text is written inside the /tmp/file. is grey like spaces before.

3. It could also be interesting in that case to show a difference between whitespace and tab because whitespace will be kept and tab will be ignored.

[jerdoe]

As a temporary workaround, one can show whitespace characters in Eclipse (Differences between whitespaces and tabs are printed)