How do you do block comments in YAML

Question

How do I comment a block of lines in YAML

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For Ruby Mine users on Windows   Open file in editor Select the block and press Ctrl forward slash  you will have selected block starting with     Now if you want to un-comment the commented block  press same key combination Ctrl forward slash again

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If you are using Eclipse with the yedit plugin  an editor for  yaml files   you can comment-out multiple lines by    selecting lines to be commented  and then Ctrl   Shift   C    And to un-comment  follow the same steps

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The spec only describes one way of marking comments      An explicit comment is marked by a         indicator    That s all  There are no block comments

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An alternative approach   If   your YAML structure has well defined fields to be used by your app AND you may freely add additional fields that won t mess up with your app   then   at any level you may add a new block text field named like  Description  or  Comment  or  Notes  or whatever   Example   Instead of    This comment   is too long   use  Description   gt    This comment   is too long   or  Comment   gt      This comment is also too long     and newlines survive from parsing    More advantages    If the comments become large and complex and have a repeating pattern  you may promote them from plain text blocks to objects Your app may -in the future- read or update those comments

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In Vim you can do one of the following     Comment all lines    s     Comment lines 10 - 15   10 15s       Comment line 10 to current line   10  s     Comment line 10 to end   10  s       or using visual block    Select a multiple-line column after entering visual block via Ctrl v  Press r followed by   to comment out the multiple-line block replacing the selection  or Shift i Esc to insert comment characters before the selection

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In  gitlab-ci yml file following works    To comment out a block  multiline   Select the whole block section  gt  Ctrl K C To uncomment already commented out block  multiline   Select the whole block section  gt   Ctrl K U

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Not trying to be smart about it  but if you use Sublime Text for your editor  the steps are    Select the block cmd   on Mac or ctrl   on Linux  amp  Windows Profit   I d imagine that other editors have similar functionality too  Which one are you using  I d be happy to do some digging

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For Visual Studio Code  VSCode  users  the shortcut to comment out multiple lines is to highlight the lines you want to comment and then press   ctrl      Pressing ctrl     again can also be used to toggle comments off for one or more selected lines

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One way to block commenting in YAML is by using a text editor like Notepad   to add a    comment  tag to multiple lines at once   In Notepad   you can do that using the  Block Comment  right-click option for selected text

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Emacs has comment-dwim  Do What I Mean  - just select the block and do a      M-    It s a toggle - use it to comment AND uncomment blocks   If you don t have yaml-mode installed you will need to tell Emacs to use the hash character

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In Azure Devops browser pipeline yaml editor    Ctrl   K   C Comment Block  Ctrl   K   U Uncomment Block  There also a  Toggle Block Comment  option but this did not work for me     There are other  wierd  ways too  right click to see  Command Palette  or F1    Then choose a cursor option    Now it is just a matter of    or even smarter  Ctrl   k     Ctrl   c

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YAML supports inline comments  but does not support block comments   From Wikipedia      Comments begin with the number sign        can start anywhere on a line  and continue until the end of the line   A comparison with JSON  also from Wikipedia      The syntax differences are subtle and seldom arise in practice  JSON allows extended charactersets like UTF-32  YAML requires a space after separators like comma  equals  and colon while JSON does not  and some non-standard implementations of JSON extend the grammar to include Javascript s           comments  Handling such edge cases may require light pre-processing of the JSON before parsing as in-line YAML      If you want to write   a block-commented Haiku   you ll need three pound signs

[comments] How do you do block comments in YAML?

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