syntax checking, "warning: missing terminating ' character"
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Description
Checking a Stan file, either from RStudio or the console, e.g.,
> rstan:::rstudio_stanc("test.stan")
or
rstan:::stanc("test.stan")
that uses the transpose operator, e.g.,
transformed data {
vector[2] a = [1,1]';
}
throws a warning:
/var/folders/pg/qc4jx60s2ys3smt604547ckw0000gn/T//RtmpJ1AeUQ/file7cf7321b3a6a.stan:2:22: warning: missing terminating ' character [-Winvalid-pp-token]
vector[2] a = [1,1]';
^
1 warning generated.
I suspect it's flagging the transpose as a string or something.
Rstan: 2.21.2
StanHeaders: 2.21.0-5
RStudio: 1.3.1056
R: 4.02
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First steps
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Research direction
Reproduce the warning with rstan:::rstudio_stanc("test.stan") or rstan:::stanc("test.stan") using the transpose expression shown in the issue. Trace the syntax-checking entry point and determine where the diagnostic is produced; done means the Stan file checks successfully without the spurious missing-terminating-character warning.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- r
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100