Question

how can I implement the following in VIM

substitute/regex_this_word/regex_with_another_word_from_the_same_line

e.g

select "ali" as name where _placeholder = _placeholder
union
select "sam" as name where _placeholder = _placeholder

after applying

:%s/_placeholder/anythin_between_quotation/

becomes

select "ali" as name where ali = ali
union
select "sam" as name where sam = sam

e.g2

select id, "_placeholder" as vul members_repeater/vul/none

after applying

:%s/_placehold/\=something_like_regexp(getline('.'),'regexp_pattern_to_select_everthing_after_/vul/")

becomes

select id, "none" as vul members_repeater/vul/none 

thanks

Answer 1

:%s/_placeholder/\=split(getline("."),'"')[1]/g

this works in this case:

• only one quotation part (replacement) in each line
• the quotation part could be anywhere in this line

for example:

select "ali" as name where _placeholder = _placeholder
union
select "sam" as name where _placeholder = _placeholder
select _placeholder where _placeholder = _placeholder "foo"
select _placeholder where "bar", _placeholder = _placeholder

into

select "ali" as name where ali = ali
union
select "sam" as name where sam = sam
select foo where foo = foo "foo"
select bar where "bar", bar = bar

edit

\=split(getline("."),'"')[1]
 |  |      |
 |  |      +--- get current line text
 |  |
 |  +------ split the line with " as separator, pick the middle part ([1])
 |
 |
 +---- using expression replacement

new edit

so you can re-use the old routine :

:%s#_placeholder#\=split(split(getline("."),"vul/")[1]," ")[0]#g

this needs only one vul/ in your line, but there could be text after the keyword (with space as separator) something like:

select id, "_placeholder" as vul members_repeater/vul/none trashtrash

into

select id, "none" as vul members_repeater/vul/none trashtrash

see this example :