| 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. |
