diff options
Diffstat (limited to 'contrib/update-unicode/README')
| -rw-r--r-- | contrib/update-unicode/README | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/contrib/update-unicode/README b/contrib/update-unicode/README new file mode 100644 index 0000000000..b9e2fc8540 --- /dev/null +++ b/contrib/update-unicode/README @@ -0,0 +1,20 @@ +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. |