Grid+ 1.2.0

Highlights

• Safer spreadsheet saving — CSV/TSV/JSON/XLSX/ODS now save in the correct format (fixes Excel “file format or extension is not valid” after save)
• Auto save control — turn auto save on/off in Preferences; off by default
• Fonts preferences tab — font, size, and cell padding moved to their own Fonts tab
• Styles & clipboard — richer spreadsheet style handling and improved table copy/paste

Features

• Auto save preference in Settings → General → Files
• New Fonts tab for grid appearance (font family, size, padding + preview)
• Style persistence for documents (including spreadsheet-friendly storage)
• Improved clipboard support for tabular data

Fixes

• Saving an .xlsx (or other spreadsheet) no longer overwrites it with CSV text
• Save / Cmd+S / autosave use the correct writer for the file type
• JSON files are saved as JSON, not delimited text

Notes

• Auto save defaults to Off. Turn it on in Preferences if you want it.
• Opening older formats (.xls, .xlsm, .xlsb, Numbers, etc.) still works; saving those paths rewrites table data as XLSX/ODS-compatible content and may not keep macros, multiple sheets, or charts. Prefer Export / Save as .xlsx for those files.
• Files already corrupted by the earlier bug need a fresh copy from the original source.