Regex replace uppercase with lowercase letters

Question

I m trying to replace uppercase letters with corresponding lowercase letters using regex  So that  EarTH    1  MerCury  0 2408467  venuS    0 61519726    becomes  earth    1  mercury  0 2408467  venus    0 61519726    in Sublime Text  How can I downcase letters only in words that contain both lower and uppercase letters  So that it affects venUs and not VENUS

User · Answer

I figured this might come in handy for others as well :

find:

([A-Z])(.*)

replace:

\L$1$2 --> will convert all letters in $1 and $2 to lowercase
BUT
\l$1$2 --> will only convert the first letter of $1 to lowercase and leave everything else as is

The same goes for uppercase with \U and \u

User · Answer

Before searching with regex like  A-Z   you should press the case sensitive button  or Alt C   as leemour nicely suggested to be edited in the accepted answer   Just to be clear  I m leaving a few other examples    Capitalize words   Find    s   a-z     s also matches new lines  i e   venuS      VenuS   Replace   1 u 2  Uncapitalize words   Find    s   A-Z   Replace   1 l 2  Remove camel case  e g  cAmelCAse    camelcAse    camelcase    Find    a-z    A-Z   Replace   1 l 2  Lowercase letters within words  e g  LowerCASe    Lowercase    Find    w   A-Z    Replace   1 L 2 Alternate Replace   L 0   Uppercase letters within words  e g  upperCASe    uPPERCASE    Find    w   A-Z    Replace   1 U 2  Uppercase previous  e g  upperCase    UPPERCase    Find    w    A-Z   Replace   U 1 2  Lowercase previous  e g  LOWERCase    lowerCase    Find    w    A-Z   Replace   L 1 2  Uppercase the rest  e g  upperCase    upperCASE    Find    A-Z    w   Replace   1 U 2  Lowercase the rest  e g  lOWERCASE    lOwercase    Find    A-Z    w   Replace   1 L 2  Shift-right-uppercase  e g  Case    cAse    caSe    casE    Find    a-z s    A-Z    w  Replace   1 l 2 u 3  Shift-left-uppercase  e g  CasE    CaSe    CAse    Case    Find    w   A-Z    a-z s   Replace   u 1 l 2 3    Regarding the question  match words with at least one uppercase and one lowercase letter and make them lowercase   leemour s comment-answer is the right answer  Just to clarify  if there is only one group to replace  you can just use    in the inner groups  i e  non capture groups  or avoid creating them at all    Find       a-z  A-Z        A-Z   a-z    OR   a-z  A-Z    A-Z   a-z   Replace   L 1   2016-06-23 Edit  Tyler suggested by editing this answer an alternate find expression for  4      B   A-Z      According to the documentation   B will look for a character that is not at the word s boundary  i e  not at the beginning and not at the end   You can use the Replace All button and it does the exact same thing as if you had   w   A-Z    as the find expression   However  the downside of  B is that it does not allow single replacements  perhaps due to the find s  not boundary  restriction  please do edit this if you know the exact reason

User · Answer

Try this   Find    A-Z    A-Z    b Replace   1 L 2   Make sure case sensitivity is on  Alt   C

User · Answer

Regular expression  Find  w   Replace  L 0     Sublime Text uses the Perl Compatible Regular Expressions  PCRE    engine from the Boost library to power regular expressions in search   panels     L Converts everything up  to lowercase   0 Capture groups

User · Answer

You may   Find    w  Replace With   L 1  Or select the text  ctrl K L

User · Answer

In BBEdit works this  ex   changing the ID values to lowercase    Search any value   lt a id    P lt x gt       gt  lt  a gt  Replace with the same in lowercase   lt a id   L P lt x gt  E  gt  lt  a gt   Was   lt a id  VALUE  gt  lt  a gt  Became   lt a id  value  gt  lt  a gt

[regex] Regex replace uppercase with lowercase letters

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