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[ruby/error_highlight] Support hard tabs

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Now, the highlight line is created by replacing non-tab characters with
spaces, and keeping all hard tabs as-is. This means the highlight line
has the completely same indentation as the code snippet line.

Fixes #7

38f20fa542
This commit is contained in:
Yusuke Endoh 2021-07-13 16:47:35 +09:00 • committed by git
parent b18f6fff69
commit 23c8bc367c
2 changed files with 19 additions and 1 deletions
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3
lib/error_highlight/formatter.rb
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@ -3,7 +3,8 @@ module ErrorHighlight
def message_for(spot)
# currently only a one-line code snippet is supported
if spot[:first_lineno] == spot[:last_lineno]
marker = " " * spot[:first_column] + "^" * (spot[:last_column] - spot[:first_column])
indent = spot[:snippet][0...spot[:first_column]].gsub(/[^\t]/, " ")
marker = indent + "^" * (spot[:last_column] - spot[:first_column])
"\n\n#{ spot[:snippet] }#{ marker }"
else