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Merge #12097: [scripts] lint-whitespace: use perl instead of grep -P

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40b17f5f9 [scripts] lint-whitespace: use perl instead of grep -P (Sjors Provoost)

Pull request description:

  MacOS does not support `grep -P` out of the box. This change makes
  it easier for developers to check for whitespace problems locally.

  Based on [this](https://stackoverflow.com/a/16658690) and [this](https://serverfault.com/a/504387) Stack Exchange answer.

  Tested with:
  ```sh
  export TRAVIS_COMMIT_RANGE='fe78c9a...62e0453'
  contrib/devtools/lint-whitespace.sh
  This diff appears to have added new lines with tab characters instead of spaces.
  The following changes were suspected:

  diff --git a/src/test/bignum_tests.cpp b/src/test/bignum_tests.cpp
  @@ -0,0 +1,110 @@
  +	num.setint64(n);
  ```

Tree-SHA512: 37c342a0ca2580289cf326a278a051a7c21ba918d6b2143fd9987f159fab85f1de3d770fcf532a642cd5d1957afc8595678128196e102dc473924758f133db7f
This commit is contained in:
Wladimir J. van der Laan 2018-03-06 23:09:27 +01:00
commit 14475e2dcd
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1 changed files with 2 additions and 2 deletions
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4
contrib/devtools/lint-whitespace.sh
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@ -59,7 +59,7 @@ if showdiff | grep -E -q '^\+.*\s+$'; then
fi
# Check if tab characters were found in the diff.
if showcodediff | grep -P -q '^\+.*\t'; then
if showcodediff | perl -nle '$MATCH++ if m{^\+.*\t}; END{exit 1 unless $MATCH>0}' > /dev/null; then
echo "This diff appears to have added new lines with tab characters instead of spaces."
echo "The following changes were suspected:"
FILENAME=""
@ -81,7 +81,7 @@ if showcodediff | grep -P -q '^\+.*\t'; then
fi
echo "$line"
fi
done < <(showcodediff | grep -P '^(diff --git |@@|\+.*\t)')
done < <(showcodediff | perl -nle 'print if m{^(diff --git |@@|\+.*\t)}')
RET=1
fi