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Fill placeholders when a template is inserted

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Templates were a fixed subject and body, so anything that changed per
message -- who it is going to, today's date -- had to be typed over
afterwards.

Eight names are recognised: recipientName, recipientFirstName,
recipientEmail, myName, myEmail, subject, date and time. Dates and times
go through datetime.ts rather than toLocaleDateString, so a template
follows the date order and clock the app was already told to use.

Filling happens on insert rather than on send. What a placeholder came to
is then visible in the composer and can be edited, instead of the message
changing between writing it and sending it.

Two things are deliberately left alone. A placeholder that cannot be
answered yet -- a recipient's name on a draft nobody has addressed -- stays
in the body as written, because substituting an empty string produces
"Hi ,", which is wrong rather than visibly unfinished; leaving the name
says which word is still missing and can be typed over. And a name that is
not a placeholder is left as written too, since a body that quietly ate an
unrecognised token would be worse than one that shows it.

Values are escaped on the way into HTML: a display name comes from a
contact card or a typed address and is not trusted markup.
This commit is contained in:
jcoffey-dev
2026-09-01 21:30:18 -07:00
parent 34578ba426
commit c85525f3ed
6 changed files with 239 additions and 3 deletions
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web/src/styles/app.css
+5
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@@ -1376,3 +1376,8 @@ button.dp-open:disabled { cursor: default; opacity: .5; }
.composer-field label .link-btn { background: none; border: 0; padding: 0; font: inherit; color: inherit; cursor: pointer; text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 3px; }
.composer-field label .link-btn:hover { color: var(--accent); }
.composer-field label .link-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
/* The placeholder reference under a template's body. */
.placeholder-list { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; align-items: baseline; }
.placeholder-row { display: contents; }
.placeholder-list code { font-family: var(--font-mono); font-size: 12.5px; background: var(--bg-sunken); border: 1px solid var(--border); border-radius: 4px; padding: .1em .4em; white-space: nowrap; }