Regex to remove duplicate letters but not numbers -

what appropriate regex remove adjacent duplicate letters not numbers?

for example:

p11ppppl  --> p11pl

i had following regex:

 /[^\w\s]|(.)(?=\1)/g

but replaces duplicate numbers.

i (visualized here):

/([a-za-z])(?=\1)/g

here's example in python:

in [21]: re.sub(r'([a-za-z])(?=\1)', '', 'p11ppppl') out[21]: 'p11pl'

you use:

/([\d])(?=\1)/g

for except digits, or:

/([\w])(?=\1)/g

for "word characters".

as @casimir et hippolyte mentioned in comments, can use:

/([a-za-z])\1+/g

with \1 replacement string, may better approach.

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