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| author | Pinghao Wu <xdavidwuph@gmail.com> | 2022-07-27 20:08:03 +0800 |
|---|---|---|
| committer | Robin Jarry <robin@jarry.cc> | 2022-07-30 17:58:26 +0200 |
| commit | b8ef8d2628e2b307864aee1f61ab4036d0473b33 (patch) | |
| tree | b29ffeb2d13f53ddd0adb1c3bc3e615e20f84440 /lib/format | |
| parent | 3304ea18bac8e5faae383c1dfc16f6f910e2c53e (diff) | |
| download | aerc-b8ef8d2628e2b307864aee1f61ab4036d0473b33.tar.gz | |
index: workaround for wide character printing
This is a workaround for https://todo.sr.ht/~rjarry/aerc/22, by
injecting zero-width spaces in front of wide characters to make up width
calculation in fmt.Sprintf.
With this applied, columns will still be misaligned a little only if
they are left with trailing zero-width spaces when cut. It is better
than a large offset caused by each wide characters in the column.
References: https://todo.sr.ht/~rjarry/aerc/22
Signed-off-by: Pinghao Wu <xdavidwuph@gmail.com>
Acked-by: Koni Marti <koni.marti@gmail.com>
Diffstat (limited to 'lib/format')
| -rw-r--r-- | lib/format/format.go | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/format/format.go b/lib/format/format.go index ca90ac4a..cc9716dd 100644 --- a/lib/format/format.go +++ b/lib/format/format.go @@ -10,6 +10,7 @@ import ( "git.sr.ht/~rjarry/aerc/models" "github.com/emersion/go-message/mail" + "github.com/mattn/go-runewidth" ) // AddressForHumans formats the address. If the address's name @@ -365,6 +366,22 @@ func ParseMessageFormat(format string, timeFmt string, thisDayTimeFmt string, i = ni + 1 } + const zeroWidthSpace rune = '\u200b' + for i, val := range args { + if s, ok := val.(string); ok { + var out strings.Builder + for _, r := range s { + w := runewidth.RuneWidth(r) + for w > 1 { + out.WriteRune(zeroWidthSpace) + w -= 1 + } + out.WriteRune(r) + } + args[i] = out.String() + } + } + return string(retval), args, nil handle_end_error: |