regex101: preprocess text files to include only readable and text words

1st Alternative^\W

^start of line

\Wany character that is not a Unicode word character

2nd Alternative^\d

^start of line

\da Unicode decimal digit

3rd Alternative^[A-Z ]+$

^start of line

Character Class[A-Z ]+

+matches at least one character from the set below:

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

the literal (32₁₀ / 40₈ / 20₁₆)

$end of line

4th Alternative^[tT]able.+

^start of line

Character Class[tT]

tthe literal t (116₁₀ / 164₈ / 74₁₆) (case sensitive)

Tthe literal T (84₁₀ / 124₈ / 54₁₆) (case sensitive)

ablethe literal text able (case sensitive)

.+any Unicode character (except for line terminators), repeated at least once

5th Alternative^[Ff]igure.+

^start of line

Character Class[Ff]

Fthe literal F (70₁₀ / 106₈ / 46₁₆) (case sensitive)

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

igurethe literal text igure (case sensitive)

.+any Unicode character (except for line terminators), repeated at least once

6th Alternative^[fF][aA][Xx].+

^start of line

Character Class[fF]

fthe literal f (102₁₀ / 146₈ / 66₁₆) (case sensitive)

Fthe literal F (70₁₀ / 106₈ / 46₁₆) (case sensitive)

Character Class[aA]

athe literal a (97₁₀ / 141₈ / 61₁₆) (case sensitive)

Athe literal A (65₁₀ / 101₈ / 41₁₆) (case sensitive)

Character Class[Xx]

Xthe literal X (88₁₀ / 130₈ / 58₁₆) (case sensitive)

xthe literal x (120₁₀ / 170₈ / 78₁₆) (case sensitive)

.+any Unicode character (except for line terminators), repeated at least once

7th Alternative^[Ee]mail.+

^start of line

Character Class[Ee]

Ethe literal E (69₁₀ / 105₈ / 45₁₆) (case sensitive)

ethe literal e (101₁₀ / 145₈ / 65₁₆) (case sensitive)

mailthe literal text mail (case sensitive)

.+any Unicode character (except for line terminators), repeated at least once

8th Alternative^EMAIL.+

^start of line

EMAILthe literal text EMAIL (case sensitive)

.+any Unicode character (except for line terminators), repeated at least once

9th Alternative\.[\w]+\.

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

Character Class[\w]+

+matches at least one character from the set below:

\wa Unicode word character

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

10th Alternative\d[\+\-\\\*\/]\d

\da Unicode decimal digit

Character Class[\+\-\\\*\/]

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

\da Unicode decimal digit

11th Alternative[\+\-\\\*\/] [\+\-\\\*\/]

Character Class[\+\-\\\*\/]

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

the literal (32₁₀ / 40₈ / 20₁₆)

Character Class[\+\-\\\*\/]

\(the literal ( (40₁₀ / 50₈ / 28₁₆)

\)the literal ) (41₁₀ / 51₈ / 29₁₆)

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\\the literal \ (92₁₀ / 134₈ / 5C₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Global pattern flags

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

g modifier: global. Finds all matches instead of stopping after the first

Search reference

Regular Expression

^\W|^\d|^[A-Z ]+$|^[tT]able.+|^[Ff]igure.+|^[fF][aA][Xx].+|^[Ee]mail.+|^EMAIL.+|\.[\w]+\.|\d[\+\-\\\*\/]\d|[\(\)\+\-\\\*\/] [\(\)\+\-\\\*\/]

Unit Tests

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