Commits on Feb 12, 2024

1. Improve user ergonomics of brew link --overwrite help …

   When a Keg is unlinked, brew-link gives a helpful message for how to proceed: adding the `--overwrite` flag.
   
   For safety, it also recommends running in `--dry-run` mode first to see what would be deleted.
   
   So a user's common flow would be:
   
   1. run `brew link foo`
   2. get error message with guidance
   3. run `brew link --overwrite --dry-run foo`
   4. inspect
   5. run `brew link --overwrite foo`
   
   In this flow, steps 3-5 are likely very common. Common enough that a user may use their shell history to re-populate their prompt with step 3's command, delete the `--dry-run` flag, and re-run. (The end goal, of course, is to link `foo`.)
   
   The `--dry-run` flag needs to be removed from the command, of course. If it had been at the _end_ of the command, it would make the subsequent  modification easier.
   
   Instead of "up arrow, left-arrow a bunch, then backspace over --dry-run, hopefully not backspacing over the formula name", it would be easier for the user if the dry-run flag were already at the end of the command. Then the user can "up arrow, backspace a few times and hit enter".
   
   What's more, if the last arg were `--dry-run`, a more advanced bash user could even use `!:-` to re-run the link command with all-but-the-last-arg.

   

   jasonkarns committed Feb 12, 2024
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