| TL;DR: Run update_unicode.sh after the publication of a new Unicode | |
| standard and commit the resulting unicode_widths.h file. | |
| The long version | |
| ================ | |
| The Git source code ships the file unicode_widths.h which contains | |
| tables of zero and double width Unicode code points, respectively. | |
| These tables are generated using update_unicode.sh in this directory. | |
| update_unicode.sh itself uses a third-party tool, uniset, to query two | |
| Unicode data files for the interesting code points. | |
| On first run, update_unicode.sh clones uniset from Github and builds it. | |
| This requires a current-ish version of autoconf (2.69 works per December | |
| 2016). | |
| On each run, update_unicode.sh checks whether more recent Unicode data | |
| files are available from the Unicode consortium, and rebuilds the header | |
| unicode_widths.h with the new data. The new header can then be | |
| committed. |