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handle expandable block quotation starts, add test for all md2 formats

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This commit is contained in:
Aleksandr Bortnikov 2026-03-04 08:37:55 +03:00
parent c6cac8b303
commit 25d4f16831
3 changed files with 49 additions and 2 deletions
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11
pkg/channels/telegram/telegram.go
View file

@ -635,7 +635,14 @@ func markdownToTelegramMarkdownV2(text string) string {
continue
}
// 5. Handle standard Markdown Entities Boundaries
// 5. Handle expandable block quotation starts
if runes[i] == '>' && runes[i-1] == '*' && runes[i-2] == '*' && (i == 0 || runes[i-3] == '\n') {
result.WriteRune(runes[i])
i++
continue
}
// 6. Handle standard Markdown Entities Boundaries
// If they are part of valid markdown boundaries, we write them as-is.
// We trust the syntax rules: * _ ~ || [ ]
// (Assuming the text is a valid markdown, we don't escape these if formatting is intended)
@ -668,7 +675,7 @@ func markdownToTelegramMarkdownV2(text string) string {
continue
}
// 6. Handle plain text characters
// 7. Handle plain text characters
// Escape remaining special characters if they aren't forming intended valid markup
if needsNormalEscape(runes[i]) {
// Check if it's already escaped; if an escape character exists, consume it legitimately

9
pkg/channels/telegram/telegram_test.go
View file

@ -4,9 +4,14 @@ import (
"fmt"
"testing"
_ "embed"
"github.com/stretchr/testify/require"
)
//go:embed testdata/md2_all_formats.txt
var md2AllFormats string
func Test_markdownToTelegramMarkdownV2(t *testing.T) {
cases := []struct {
input string
@ -24,6 +29,10 @@ func Test_markdownToTelegramMarkdownV2(t *testing.T) {
input: "[inline URL](http://www.example.com/)",
expected: "[inline URL](http://www.example.com/)",
},
{
input: md2AllFormats,
expected: md2AllFormats,
},
}
for _, tc := range cases {

31
pkg/channels/telegram/testdata/md2_all_formats.txt vendored Normal file
View file

@ -0,0 +1,31 @@
*bold \*text*
_italic \*text_
__underline__
~strikethrough~
||spoiler||
*bold _italic bold ~italic bold strikethrough ||italic bold strikethrough spoiler||~ __underline italic bold___ bold*
[inline URL](http://www.example.com/)
[inline mention of a user](tg://user?id=123456789)
![👍](tg://emoji?id=5368324170671202286)
![22:45 tomorrow](tg://time?unix=1647531900&format=wDT)
![22:45 tomorrow](tg://time?unix=1647531900&format=t)
![22:45 tomorrow](tg://time?unix=1647531900&format=r)
![22:45 tomorrow](tg://time?unix=1647531900)
`inline fixed-width code`
```
pre-formatted fixed-width code block
```
```python
pre-formatted fixed-width code block written in the Python programming language
```
>Block quotation started
>Block quotation continued
>Block quotation continued
>Block quotation continued
>The last line of the block quotation
**>The expandable block quotation started right after the previous block quotation
>It is separated from the previous block quotation by an empty bold entity
>Expandable block quotation continued
>Hidden by default part of the expandable block quotation started
>Expandable block quotation continued
>The last line of the expandable block quotation with the expandability mark||