Update runtime files
diff --git a/runtime/syntax/python.vim b/runtime/syntax/python.vim
index ff58325..7aa82f1 100644
--- a/runtime/syntax/python.vim
+++ b/runtime/syntax/python.vim
@@ -1,7 +1,7 @@
" Vim syntax file
" Language: Python
" Maintainer: Zvezdan Petkovic <zpetkovic@acm.org>
-" Last Change: 2023 Feb 26
+" Last Change: 2023 Feb 28
" Credits: Neil Schemenauer <nas@python.ca>
" Dmitry Vasiliev
"
@@ -178,17 +178,17 @@
" and so on, as specified in the 'Python Language Reference'.
" https://docs.python.org/reference/lexical_analysis.html#numeric-literals
if !exists("python_no_number_highlight")
- " numbers (including longs and complex)
- syn match pythonNumber "\<0[oO]\=\o\+[Ll]\=\>"
- syn match pythonNumber "\<0[xX]\x\+[Ll]\=\>"
- syn match pythonNumber "\<0[bB][01]\+[Ll]\=\>"
- syn match pythonNumber "\<\%([1-9]\d*\|0\)[Ll]\=\>"
- syn match pythonNumber "\<\d\+[jJ]\>"
- syn match pythonNumber "\<\d\+[eE][+-]\=\d\+[jJ]\=\>"
+ " numbers (including complex)
+ syn match pythonNumber "\<0[oO]\%(_\=\o\)\+\>"
+ syn match pythonNumber "\<0[xX]\%(_\=\x\)\+\>"
+ syn match pythonNumber "\<0[bB]\%(_\=[01]\)\+\>"
+ syn match pythonNumber "\<\%([1-9]\%(_\=\d\)*\|0\+\%(_\=0\)*\)\>"
+ syn match pythonNumber "\<\d\%(_\=\d\)*[jJ]\>"
+ syn match pythonNumber "\<\d\%(_\=\d\)*[eE][+-]\=\d\%(_\=\d\)*[jJ]\=\>"
syn match pythonNumber
- \ "\<\d\+\.\%([eE][+-]\=\d\+\)\=[jJ]\=\%(\W\|$\)\@="
+ \ "\<\d\%(_\=\d\)*\.\%([eE][+-]\=\d\%(_\=\d\)*\)\=[jJ]\=\%(\W\|$\)\@="
syn match pythonNumber
- \ "\%(^\|\W\)\zs\d*\.\d\+\%([eE][+-]\=\d\+\)\=[jJ]\=\>"
+ \ "\%(^\|\W\)\zs\%(\d\%(_\=\d\)*\)\=\.\d\%(_\=\d\)*\%([eE][+-]\=\d\%(_\=\d\)*\)\=[jJ]\=\>"
endif
" Group the built-ins in the order in the 'Python Library Reference' for