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-rw-r--r--syntax/javascript.vim2
1 files changed, 1 insertions, 1 deletions
diff --git a/syntax/javascript.vim b/syntax/javascript.vim
index 615862dc..41543024 100644
--- a/syntax/javascript.vim
+++ b/syntax/javascript.vim
@@ -58,7 +58,7 @@ syntax match jsModuleComma contained /,/ skipwhite skipempty nextgroup=
syntax region jsString start=+\z(["']\)+ skip=+\\\%(\z1\|$\)+ end=+\z1+ end=+$+ contains=jsSpecial extend
syntax region jsTemplateString start=+`+ skip=+\\`+ end=+`+ contains=jsTemplateExpression,jsSpecial extend
syntax match jsTaggedTemplate /\<\K\k*\ze`/ nextgroup=jsTemplateString
-syntax match jsNumber /\c\<\%(\d\+\%(e[+-]\=\d\+\)\=\|0b[01]\+\|0o\o\+\|0x\x\+\)\>/
+syntax match jsNumber /\c\<\%(\d\+\%(e[+-]\=\d\+\)\=\|0b[01]\+\|0o\o\+\|0x\%(\x\|_\)\+\)\>/
syntax keyword jsNumber Infinity
syntax match jsFloat /\c\<\%(\d\+\.\d\+\|\d\+\.\|\.\d\+\)\%(e[+-]\=\d\+\)\=\>/