HIGH: [Polish] Add support for image-only (no alt text) inline image Markdown

[quinthar]

Problem:

In HIGH: [Polish] Add support for inline image Markdown we added support for ![alt text](imageURL) syntax, which is great! However, that presumes you always have "alt text", which in my experience, is rare.

Solution:

Add support for !(imageURL), which doesn't use any alt text.

[quinthar]

@kidroca can you comment here and/or self-assign? (I can't assign... for some dumb GH limitation I can't explain).

[kidroca]

I'm not able to self-assign myself to this issue, but this comment should allow anyone with access to assign me

[kidroca]

The pull request (PR) for expensify-common is ready for review:

• PR #676 on Expensify/common

However, the existing bug with live-markdown and MD image, gets in the way here as well. While trying to submit a PR for NewDot to allow QA testing of the Markdown (MD) image shorthand syntax, I encountered the same bug (detailed in #39275) using the latest main branch. This bug prevents the usage of images with shorthand syntax. Although I confirmed the feature works with an older commit, submitting a PR based on it isn't feasible because PRs have to be based on a recent version of main.

The tricky part is the resolution to the live markdown preview issue depends on a fix included in my expensify-common PR (the on at the top), as described here #39275 (comment).

Since testing this fix directly in NewDot is impossible ATM, I recommend integrating the expensify-common update into the live markdown preview PR. This combined approach appears to be the most effective solution:

• Issue #39275 on Expensify/App
• Live Markdown PR #256

[kidroca]

PRs are ready for review:

• 🔧 ExpensiMark: Markdown image shorthand syntax expensify-common#676
• Feature: Short-hand image Markdown syntax #39759

[kidroca]

• The PR for expensify-common has been successfully merged: 🔧 ExpensiMark: Markdown image shorthand syntax expensify-common#676.
• The corresponding PR for NewDot has become redundant, as it only involved updating the expensify-common version. A newer version including my changes and additional updates has already been merged into main: Feature: Short-hand image Markdown syntax #39759

One potential issue is that we usually use the NewDot PR to test changes, but this PR automatically closed when I synced it with main, as there were no remaining differences.

I've provided detailed testing instructions in the PR, which QA can use to validate the new feature.

[quinthar]

Can we close this?

[kidroca]

Can we close this?

Yes

[melvin-bot]

This issue has not been updated in over 15 days. @kidroca eroding to Monthly issue.

P.S. Is everyone reading this sure this is really a near-term priority? Be brave: if you disagree, go ahead and close it out. If someone disagrees, they'll reopen it, and if they don't: one less thing to do!

[melvin-bot]

@kidroca, this Monthly task hasn't been acted upon in 6 weeks; closing.

If you disagree, feel encouraged to reopen it -- but pick your least important issue to close instead.