How To Remove All Lines Containing Any non-ASCII Characters Using Notepad++ or Emeditor

How do I remove all lines containing any non-ASCII keyboard characters?

I tried so many times Regular Expressions codes but none work like it should be
I even tried this code [^\x00-\x7F]+ but it didn't select all the characters

the idea come on my mind is to use this way [^a-z0-9``~!@#$%^&*()-_=+[]{}\|;:'"<>,./?] but still not work because some of this characters didn't get deselected like \ / | { } [ ] $ # ^ ( )

If a line contains any characters not in the list below, I want to remove remove it or bookmark it

0123456789`~!@#$%^&*()-_=+[]{}\/|;:'"<>,.?
abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ

Simple example: There are more characters like this found here: https://en.wikipedia.org/wiki/List_of_Unicode_characters

0123456789`~!@#$%^&*()-_=+[]{}\|;:'"<>,./?
abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ
¤©ª«¬¯°±²³´µ¶·¸¹º»¼½¾¿÷ÆĲŒœƔƕƋƕ
ƜƝƢƸƾǅǊǋǽǾǼɁɀȾɎʒəɼʰʲʱʴʳʵʶʷʸˁˀˇˆ˟ˠ
˩˧Ͱͱͳʹͼͻͺ͵ͿΏΔΘΞΛΣΠΦΧΨΩΪΫάέήίΰαβδε
θηκλμξπςρφχψωϊϋϏώϑϐϓϒϔϕϖϠϟϞϝϜϡϢ
ϤϣϧϫϬϮϯϰϱ₠₡₢₣₤₥₦₧₨₩₪₫€₭₮₯₰₱₲
₳₴₵₶₷₸₹₺₻₼₽₾₿⅐⅑⅒⅓⅔⅕⅖⅗⅘⅙⅚⅛⅜
⅝⅞⅟℠℡™℣ℤ℥Ω℧ℨ℩KÅℬℭ℮ℯ⇀⇁ↀↁↂↃↄ
⇔⇕⇖⇗⇘⇙⇚⇛⇜⇝⇞⇟⇠⇡⇢⇣⇤⇥⇦⇧⇨⅀⅁⅂⅃⅄ⅅ
ⅆⅇⅈⅉ⅊⅋⅌⅍ⅎ⅏ⅱⅲⅳⅴⅵⅶⅷⅸⅹⅺⅻⅼⅽ

Expected result:

0123456789`~!@#$%^&*()-_=+[]{}\|;:'"<>,./?
abcdefghijklmnopqrstuvwxyz
ABCDEFGHIJKLMNOPQRSTUVWXYZ

Best Answer

[^\x00-\x7F] works fine, but, if you want to use a long character class like [^a-z0-9``~!@#$%^&*()-_=+[]{}\|;:'"<>,./?] you have to escape characters that have a special meaning (ie. -[]\ and add linebreak \r,\n.

Your regex becomes:

 [^a-z0-9``~!@#$%^&*()\-_=+\[\]{}\\|;:'"<>,./?\r\n]
 #                    ^    ^ ^   ^            ^^^^

Ctrl+H
Find what: [^a-z0-9``~!@#$%^&*()\-_=+\[\]{}\\|;:'"<>,./?\r\n]+$ But, again, [^\x00-\x7F] works fine and is more readable
Replace with: LEAVE EMPTY
check Wrap around
check Regular expression
Replace all

Result for given example:

Best Answer

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