1 Commits (d28568e565414d341dd0863d72c4206fc04dfd90)

Author	SHA1	Message	Date
Martin Atkins	ff0dbd6215	command/fmt: Restore some opinionated behaviors ... In Terraform 0.11 and earlier, the "terraform fmt" command was very opinionated in the interests of consistency. While that remains its goal, for pragmatic reasons Terraform 0.12 significantly reduced the number of formatting behaviors in the fmt command. We've held off on introducing 0.12-and-later-flavored cleanups out of concern it would make it harder to maintain modules that are cross-compatible with both Terraform 0.11 and 0.12, but with this aimed to land in 0.14 -- two major releases later -- our new goal is to help those who find older Terraform language examples learn about the more modern idiom. More rules may follow later, now that the implementation is set up to allow modifications to tokens as well as modifications to whitespace, but for this initial pass the command will now apply the following formatting conventions: - 0.11-style quoted variable type constraints will be replaced with their 0.12 syntax equivalents. For example, "string" becomes just string. (This change quiets a deprecation warning.) - Collection type constraints that don't specify an element type will be rewritten to specify the "any" element type explicitly, so list becomes list(any). - Arguments whose expressions consist of a quoted string template with only a single interpolation sequence inside will be "unwrapped" to be the naked expression instead, which is functionally equivalent. (This change quiets a deprecation warning.) - Block labels are given in quotes. Two of the rules above are coming from a secondary motivation of continuing down the deprecation path for two existing warnings, so authors can have two active deprecation warnings quieted automatically by "terraform fmt", without the need to run any third-party tools. All of these rules match with current documented idiom as shown in the Terraform documentation, so anyone who follows the documented style should see no changes as a result of this. Those who have adopted other local style will see their configuration files rewritten to the standard Terraform style, but it should not make any changes that affect the functionality of the configuration. There are some further similar rewriting rules that could be added in future, such as removing 0.11-style quotes around various keyword or static reference arguments, but this initial pass focused only on some rules that have been proven out in the third-party tool terraform-clean-syntax, from which much of this commit is a direct port. For now this doesn't attempt to re-introduce any rules about vertical whitespace, even though the 0.11 "terraform fmt" would previously apply such changes. We'll be more cautious about those because the results of those rules in Terraform 0.11 were often sub-optimal and so we'd prefer to re-introduce those with some care to the implications for those who may be using vertical formatting differences for some semantic purpose, like grouping together related arguments.	6 years ago