| Type | Wish | Status | submitted | Date | 23-Mar-2015 22:12 |
|---|---|---|---|---|---|
| Version | r3 master | Category | Unspecified | Submitted by | fork |
| Platform | All | Severity | minor | Priority | normal |
| Summary | Restrict "Natural Tags" to start and end with alpha-numerics or ! ? / |
|---|---|
| Description |
This proposal does not technically require #2094 or any other proposal. However, it is nicest when considering the idea that there is a very natural construction syntax for tags. Put briefly: if "unnatural" tags in source required escaping or construction syntax to form, then it would open up more usages of < and > as symbols in words. The few strange "parsing exceptions" known today would become part of a broader set of possibilities. For instance: <- foo -> Because the < was not followed by an alphanumeric (or an !), then this would be interpreted as three words: <-, foo, and -> Very good construction syntaxes for tag could be imagined if #2094 (with the four cases removed) were to go through. So for the above, if you actually wanted a tag with that content you might say: tag!{- foo -} There would be a lot of cool symbols reclaimed. >>=, ~~>, |>, >*, <- However, it would probably be best for symmetry purposes to restrict some "possible" mixed natural words. So since `<a` would start a tag, make `a>` illegal even if there is no tag open and you don't technically "have to". It also would assist in readability and not reading something like `foo > bar` as a comparison if natural tags were forbidden from ending in a space. That could be remedied with escaping, such as `foo^_> bar` if it came up, or a construction syntax. As another rule: If a natural word is going to make use of the < and > symbols, one category is excluded: Anything *starting* with < and *ending* with > will be illegal (if it is not a natural tag). This excludes things like: <=> <|> <==> <-|-> Their shape is too confusing and could be mistaken for a tag, which they would not be. I also feel `<>` (which is legal today and falls into this set) should be illegal for the interim, and perhaps someday in a later version be revived as an acceptable "empty tag". In its place, the less confusing `!=` would serve just fine...as well as permitting symmetry with `!==` to match `==`. (`<>=` is ridiculous for the operation of "strictly not equal", although a legal WORD! under this proposal) |
| Example code |
| Assigned to | n/a | Fixed in | - | Last Update | 24-Mar-2015 07:06 |
|---|
| Date | User | Field | Action | Change |
|---|---|---|---|---|
| 24-Mar-2015 07:06 | Fork | Description | Modified | - |
| 24-Mar-2015 07:05 | Fork | Description | Modified | - |
| 24-Mar-2015 07:03 | Fork | Summary | Modified | Restrict "Natural Tags" to starting with alpha-numerics or ! => Restrict "Natural Tags" to start and end with alpha-numerics or ! ? / |
| 24-Mar-2015 07:03 | Fork | Description | Modified | - |
| 23-Mar-2015 23:34 | fork | Description | Modified | - |
| 23-Mar-2015 23:26 | fork | Type | Modified | Bug => Wish |
| 23-Mar-2015 22:18 | fork | Description | Modified | - |
| 23-Mar-2015 22:17 | fork | Description | Modified | - |
| 23-Mar-2015 22:17 | fork | Description | Modified | - |
| 23-Mar-2015 22:12 | fork | Ticket | Added | - |