[PR PATCH] Improve attachments handling

[rakoo <rakoo@users.noreply.github.com>]

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There is a new pull request by rakoo against master on the mblaze repository

https://github.com/rakoo/mblaze master
https://github.com/leahneukirchen/mblaze/pull/234

Improve attachments handling
I had to manually explore to understand how to add attachments, the man page was a bit evasive. It also didn't help that a `~` at the beginning of the path isn't caught, so I added the same treatment as outbox parsing.

Thanks for this fantastic piece of software, the joys of building one's own MUA in ~150 lines of shell scripts...

A patch file from https://github.com/leahneukirchen/mblaze/pull/234.patch is attached

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From 518b29b3d1c424584c8c88a9319f9feac9123651 Mon Sep 17 00:00:00 2001
From: Matthieu Rakotojaona <m@rako.space>
Date: Mon, 27 Feb 2023 15:27:03 +0100
Subject: [PATCH 1/2] mcom: Allow tilde in attachment

---
 mcom | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mcom b/mcom
index 397cb5f..7258266 100755
--- a/mcom
+++ b/mcom
@@ -84,6 +84,7 @@ do_mime() {
 			IFS=$NL
 			msed '/attach/d' "$draft"
 			for f in $(mhdr -M -h attach "$draft"); do
+				f=$(echo $f | sed "s:^~/:$HOME/:")
 				printf '#%s %s\n' \
 				       "$(file -Lb --mime "$f" | sed 's/ //g')" \
 				       "$f"

From d15f2af0bdf178b35329aa1c554d85de37a2c817 Mon Sep 17 00:00:00 2001
From: Matthieu Rakotojaona <m@rako.space>
Date: Mon, 27 Feb 2023 15:33:13 +0100
Subject: [PATCH 2/2] mcom: Document how attachments work

---
 man/mcom.1 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/man/mcom.1 b/man/mcom.1
index 957c322..08592c7 100644
--- a/man/mcom.1
+++ b/man/mcom.1
@@ -130,6 +130,13 @@ Delete the draft and quit.
 Preview the draft, using
 .Xr mshow 1 .
 .El
+.Sh ATTACHMENTS
+From within the editor, attachments are added by setting an Attach: header with the path to the desired files. Multiple Attach: headers can be added.
+
+To add from the commandline, use
+.Sq mcom Fl attach No path/to/file
+and the header will be added automatically.
+It is possible to use tilde (~) in the file path.
 .Sh ENVIRONMENT
 .Bl -tag -width Ds
 .It Ev EDITOR , Ev VISUAL