Regex 如何在Stata中每次出现字符串时向字符串添加递增值？

我有一个名为

talk

的字符串变量。假设我想在

talk

中找到单词“please”的所有实例，并在每一行中为每个包含单词递增计数的“please”添加后缀

例如，如果

talk

如下所示：

"will you please come here please do it as soon as you can if you please"

我希望它看起来像这样：

"will you please1 come here please2 do it as soon as you can if you please3"

换句话说，“please1”表示它是第一个出现的“please”，而“please2”则是第二个，以此类推

我已经用正则表达式和几个循环编写了一些代码（如下），但它并不完美，即使我可以解决这些问题，它似乎也过于复杂有更简单的方法吗？

# I first extract the portion of 'talk' beginning from the 1st please to the last   
    gen talk_pl = strtrim(stritrim(regexs(0))) if regexm(talk, "please.+please")
# I count the number of times "please" occurs in 'talk_pl'
    egen count = noccur(talk_pl), string("please")
# in the loop below, x = 2nd to last word; i = 3rd to last word 
    qui levelsof count
    foreach n in `r(levels)' {
            local i = `n' -1
            local x = `i' -1
            replace talk_pl = regexrf(talk_pl, "please$", "please`n'") if count == `n'      
            replace talk_pl = regexrf(talk_pl, "please (?=.+?please`n')", "please`i' ") if count == `n' 
            replace talk_pl = regexrf(talk_pl, "please (?=.+?please`i')", "please`x' ") if count == `n'         
        }

---

不知道为什么我的帖子中的代码是彩色的！这比我想做的要简单得多-谢谢！！

* Example generated by -dataex-. To install: ssc install dataex
clear
input str71 talk
"will you please come here please do it as soon as you can if you please"
end

// Install egenmore if not installed already
* ssc install egenmore

clonevar wanted = talk

// count occurrences of "please"
egen countplease = noccur(talk), string(please)

// Loop over 1 to max number of occurrences
sum countplease, meanonly 
forval i = 1/`r(max)' {
    replace wanted = ustrregexrf(wanted, "\bplease\b", "please`i'")
}
list

     +---------------------------------------------------------------------------------------+
  1. |                                                                           talk        |
     |        will you please come here please do it as soon as you can if you please        |
     |---------------------------------------------------------------------------------------|
     |                                                                     wanted | countp~e |
     | will you please1 come here please2 do it as soon as you can if you please3 |        3 |
     +---------------------------------------------------------------------------------------+