Trying NOT to match a Japanese word using RegEx negative lookbehind

Question

The target structure looks like the following:

検索結果：１００，０００件

If I use the following regex pattern:

((?<!検索結果：)(?<!次の)(((〇|一|二|三|四|五|六|七|八|九|十|百|千|万|億|兆|京+|[0-9０-９]))(,|，|、)?).+((〇|一|二|三|四|五|六|七|八|九|十|百|千|万|億|兆|京|[0-9０-９]).+)件)(?!表示)

As you can see, I want to unmatch everything preceded by "検索結果：" & "次の" using this pattern followed by either Arabic numerals or Japanese kanji (Chinese character) numbers. However, the pattern somehow matches up to 4 digits but not 6 digits.

In other words,

次の１０００件

works (meaning it doesn't match anything), but

次の５，００００件

gives a partial match ("００００件")

I want to know why up to 4 digits. And ultimately want to find a way to NOT match anything using this regex. I know this regex is a bit messy. Thanks in advance for your feedback!

Answer 1

You need to avoid matching the numbers after a digit or digit + the separator, so you need to add (?<![０-９0-9])(?<![０-９0-9][，,、]) right after (?<!次の):

(?<!検索結果：)(?<!次の)(?<![０-９0-9])(?<![０-９0-9][，,、])(?:[〇一二三四五六七八九十百千万億兆0-9０-９]|京+)[,，、]?.+[〇一二三四五六七八九十百千万億兆京0-9０-９].+件
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

See the regex demo.