From: jean.boussier@... Date: 2020-09-26T18:18:35+00:00 Subject: [ruby-core:100177] [Ruby master Bug#17184] No stdlib function to perform simple string replacement Issue #17184 has been updated by byroot (Jean Boussier). > But then we need to clarify if that replaces the first or all occurrences As far as I know, String `replace` commonly means replace all occurrences. - Python: replaces all occurrences, but has a `maxreplace` optional parameters. https://docs.python.org/2/library/string.html#string.replace - PHP: replaces all occurrences https://www.php.net/manual/en/function.str-replace.php - Javascript, is a bit weird, it's all if the search is a regexp with the `/g` modifier, for strings, it's the first occurence, and it has `replaceAll` alongside it. - Java: replaces all occurrences https://docs.oracle.com/javase/7/docs/api/java/lang/String.html#replace(char,%20char) - C#: replaces all occurrences: https://docs.microsoft.com/en-us/dotnet/api/system.string.replace?view=netcore-3.1 - Go has replace and replaceAll like Javascript: https://golang.org/pkg/strings/#Replace - Rust replaces all occurrences: https://doc.rust-lang.org/std/string/struct.String.html#method.replace So all in all I don't think it's a huge problem, the least surprising IMHO would be replace all occurrence, and I find Python's optional `maxreplace` quite a good idea. ---------------------------------------- Bug #17184: No stdlib function to perform simple string replacement https://bugs.ruby-lang.org/issues/17184#change-87750 * Author: sheerun (Adam Stankiewicz) * Status: Open * Priority: Normal * Assignee: matz (Yukihiro Matsumoto) * ruby -v: ruby 2.5.5p157 (2019-03-15 revision 67260) [x86_64-darwin19] * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN ---------------------------------------- I have following simple `build.rb`: ```rb template = File.read('template.vim') script = File.read('script.vim') File.write('app.vim', template.gsub("SCRIPT", script)) ``` And then following `template.vim`: ```vim " some header SCRIPT ``` Plus following `script.vim`: ```vim if g:something =~ "\s\+" echo 'g:something is empty' endif ``` I'd expect that the script above produces `app.vim` with following contents: ```vim " some header if g:something =~ "\s\+" echo 'g:something is empty' endif ``` Unfortunately it produces following: ```vim " some header if g:something =~ "\s" echo 'g:something is empty' endif ``` It's probably because gsub interprets `\+` in script as back-reference. I tried to find replacement function in ruby that just replaces one string with something else, without interpreting replacement in any way, but surprisingly I haven't found any.. Am I mistaken? -- https://bugs.ruby-lang.org/ Unsubscribe: