basics: vim style seach and replace

docs/neovim-basics/search-replace.md

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+# Search and Replace
+
+`:substitute` or `:s` vim command will highlight the matches for a text pattern and substitute for a new pattern
+
+Built-in help for the command 
+
+```vim
+:help :substitute
+```
+
+??? HINT "Multiple cursors can also be used for multiple substitutions"
+    [multiple cursors](multiple-cursors.md) created on each occurance can be used to search and replace a pattern
+
+
+Subsitute the first matching patterns in the current line
+
+```vim
+:s/current-pattern/new-pattern
+```
+
+Subsitute all the matching patterns in the current line,  `g` representing all occurances in a line
+
+```vim
+:s/current-pattern/new-pattern/g
+```
+
+Use `%` to specify the current buffer as the scope to change all matches
+
+```vim
+:%s/current-pattern/new-pattern/g
+```
+