expand wrong for `$`

[Shane-XB-Qian]

supposed this is the right place for this: for example "sed ${1|-E,--regexp-extended|} ':${2:x} N $! b$2 ${3:command}' ${4:file}" seems cannot expand $!, as well as $$ and $n if n > 9 e.g $10

[Shane-XB-Qian]

i mean should not expand $! and $$ etc, but $n but should allow n > 9

[Shane-XB-Qian]

or actually in some langs $n has special meaning too, how to make it not expand (if chose)?

[uga-rosa]

$ as a mere symbol, it should be escaped with \.

sed ${1|-E,--regexp-extended|} ':${2:x} N \$! b$2 ${3:command}' ${4:file}

Also, a bug that prevented more than 9 press holders from working has recently been fixed.

[Shane-XB-Qian]

should be escaped with \

looks double \ required.

a bug that prevented more than 9 press holders from working has recently been fixed.

thanks, good news.

[uga-rosa]

The need for two \ is an escape in double quotes in the vim script, and the string that is actually conveyed to vsnip is \$. Single quotes would be one.

[Shane-XB-Qian]

ok, my case actually was from typescript, but vsnip was wrote by vim script, guess eventually it got was \$.