Ivan Liashkevich
43f49df9ea
Obsidian auto-formats markdown tables with column-aligned padding on every file open, causing noisy git diffs. This filter strips extra whitespace from table cells on git add/diff, keeping the repo clean. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
#!/usr/bin/env python3
|
|
"""Git clean filter: normalizes markdown table padding.
|
|
|
|
Obsidian auto-formats tables with aligned columns (extra spaces).
|
|
This filter strips padding to single-space format: | cell | cell |
|
|
Handles escaped pipes (\\|) inside cells correctly.
|
|
"""
|
|
import sys
|
|
import re
|
|
|
|
SEPARATOR_RE = re.compile(r'^\|(\s*[-:]+[-:\s]*\|)+\s*$')
|
|
|
|
|
|
def clean_table_row(line):
|
|
"""Strip extra whitespace from a markdown table row, preserving escaped pipes."""
|
|
# Replace escaped pipes with placeholder
|
|
placeholder = '\x00PIPE\x00'
|
|
work = line.replace('\\|', placeholder)
|
|
|
|
if not work.startswith('|') or not work.rstrip().endswith('|'):
|
|
return line
|
|
|
|
# Check if separator row
|
|
if SEPARATOR_RE.match(work):
|
|
cells = work.strip().split('|')
|
|
# cells[0] and cells[-1] are empty (before first | and after last |)
|
|
n_cols = len(cells) - 2
|
|
return '|' + '|'.join(['---'] * n_cols) + '|'
|
|
|
|
# Regular row: split by |, trim each cell
|
|
cells = work.strip().split('|')
|
|
# cells[0] = '' (before first |), cells[-1] = '' (after last |)
|
|
result_parts = []
|
|
for i, cell in enumerate(cells):
|
|
if i == 0 or i == len(cells) - 1:
|
|
result_parts.append('')
|
|
else:
|
|
content = cell.strip().replace(placeholder, '\\|')
|
|
result_parts.append(f' {content} ')
|
|
|
|
return '|'.join(result_parts)
|
|
|
|
|
|
for line in sys.stdin:
|
|
line = line.rstrip('\n').rstrip('\r')
|
|
if line.startswith('|'):
|
|
print(clean_table_row(line))
|
|
else:
|
|
print(line)
|