Is it ok to have commas in a summary tag in a ics document?
Because I am using calcurse to load an .ics and it doesn't load the event with summary comma separated.
According to the RFC5545 Specification, Comma's need to be backslashed in that situation. See:
SUMMARY is defined here: https://www.rfc-editor.org/rfc/rfc5545#section-3.8.1.12 as of Value Type: TEXT
TEXT is defined here: https://www.rfc-editor.org/rfc/rfc5545#section-3.3.11
Here is part of the above specification that describes what to do with certain characters if you want to include them in a text value:
text = *(TSAFE-CHAR / ":" / DQUOTE / ESCAPED-CHAR)
; Folded according to description above
ESCAPED-CHAR = ("\\" / "\;" / "\," / "\N" / "\n")
; \\ encodes \, \N or \n encodes newline
; \; encodes ;, \, encodes ,
TSAFE-CHAR = WSP / %x21 / %x23-2B / %x2D-39 / %x3C-5B /
%x5D-7E / NON-US-ASCII
; Any character except CONTROLs not needed by the current
; character set, DQUOTE, ";", ":", "\", ","
Description: If the property permits, multiple TEXT values are
specified by a COMMA-separated list of values.
...
The "TEXT" property values may also contain special characters
that are used to signify delimiters, such as a COMMA character for
lists of values or a SEMICOLON character for structured values.
In order to support the inclusion of these special characters in
"TEXT" property values, they MUST be escaped with a BACKSLASH
character. .... A COMMA character in
a "TEXT" property value MUST be escaped with a BACKSLASH
character. ....