show: Add "comments" config option.

I'd like to always display the full comments when viewing an MR or Issue.
Add a "comments" config variable that sets the "--comments" flag on
'mr show' and 'issue show'.

Add a "comments" local config option for the show commmands.

Additional fix: Fix a leftover HCL to TOML change in the README

Signed-off-by: Prarit Bhargava <prarit@redhat.com>

README.md

@@ -90,7 +90,7 @@ instance. There are several ways to provide this information to `lab`:
 2. environment variables: `CI_PROJECT_URL`, `CI_JOB_TOKEN`;
     - Note: these are meant for when `lab` is running within a GitLab CI pipeline
 3. directory-specific configuration file in [Tom's Obvious, Minimal Language (TOML)](https://github.com/toml-lang/toml): `./lab.toml`;
-4. user-specific configuration file in HCL: `~/.config/lab/lab.toml`.
+4. user-specific configuration file in TOML: `~/.config/lab/lab.toml`.
 
 These are checked in order. If no suitable config values are found, `lab` will
 prompt for your GitLab information and save it into `~/.config/lab/lab.toml`.
@@ -99,6 +99,13 @@ For example:
 $ lab
 Enter default GitLab host (default: https://gitlab.com):
 Enter default GitLab token:
+```
+
+Additionally, there are command-specific configuration files in TOML: .git/lab/[command]-metadata.toml which provide users the ability to override some command line options:
+
+```
+comments = true # sets --comments on 'mr show' commands
+
 ```
 # Completions
 

cmd/issue_show.go

@@ -65,6 +65,9 @@ var issueShowCmd = &cobra.Command{
 		printIssue(issue, rn, renderMarkdown)
 
 		showComments, _ := cmd.Flags().GetBool("comments")
+		if showComments == false {
+			showComments = viper.GetBool("comments")
+		}
 		if showComments {
 			discussions, err := lab.IssueListDiscussions(rn, int(issueNum))
 			if err != nil {

cmd/mr_show.go

@@ -92,6 +92,9 @@ var mrShowCmd = &cobra.Command{
 		}
 
 		showComments, _ := cmd.Flags().GetBool("comments")
+		if showComments == false {
+			showComments = viper.GetBool("comments")
+		}
 		if showComments {
 			discussions, err := lab.MRListDiscussions(rn, int(mrNum))
 			if err != nil {