Encoding issue (not UTF-8) and repeated entries

[GegznaV]

Describe the bug

1. Encoding issue in displaying non-ASCII characters.
2. Repeated entries of the same source (in bib file they are entered only once)

To Reproduce
Call citr RStudio add-in from the attached project: citr--UTF-8--bug.zip

Expected behavior

1. Correct encoding (UTF-8) for all characters.
2. Each entry is shown exactly once.

Screenshots

Encoding is set to UTF-8 in settings:

Additional context

R             3.6.3
RStudio       1.2.5033
citr          0.3.2

- Session info ----------------------------------
 setting  value                       
 version  R version 3.6.3 (2020-02-29)
 os       Windows 10 x64              
 system   x86_64, mingw32             
 ui       RStudio                     
 language (EN)                        
 collate  English_United States.1252  
 ctype    English_United States.1252  
 tz       Europe/Helsinki             
 date     2020-03-15    

[GegznaV]

Another encoding issue may be here:

citr/R/insert_citation.R

Line 107 in 0afd6f9

parent_document <- readLines(parents_path[parents], warn = FALSE)

Shouldn't it be:

parent_document <- readLines(parents_path[parents], warn = FALSE, encoding = getOption("citr.encoding")) 

[GegznaV]

#68 solves the issue of duplicated entries. It addresses one more potential issue related to encoding.

And the indicated encoding issue is related to RefManageR::ReadBib() which does not respect the value of encoding:

RefManageR::ReadBib("book.bib", check = FALSE, .Encoding = "UTF-8")

## [1] V. Čekanavi�ius and G. Murauskas. _Statistika ir jos taikymai I_. Vilnius:
## TEV, 2006, p. 240. ISBN: 9986-546-93-1.

##  / truncated /

## [5] V. Janilionis, V. Morkevicius, and R. Rauleckas. “III dalis. StatistinÄ—s
## analizÄ—s pavyzdžių naudojant pavyzdin\ce skaitmenin\ce duomenų baz\ce
## medžiaga”. In: _StatistinÄ— kiekybinių duomenų analizÄ— su SPSS ir Stata_.
## Kaunas, 2008. Chap. 10. Daugia, p. 393. <URL:
## http://www.lidata.eu/index.php?file=files/mokymai/stat/stat.html{\&}course{\_}file=stat{\_}III{\_}10.html>.

#  / truncated /

## Warning messages:
## 1: Janilionis2008-III-10: unknown macro '\c' 
## 2: Janilionis2008-III-10: unknown macro '\c' 
## 3: Janilionis2008-III-10: unknown macro '\c' 

This encoding issue is related to #53

[crsh]

Thanks for the PR, I've hardcoded the expected encoding of parent documents to UTF-8, because rmarkdown assumes UTF-8 encoding anyways and because the option citr.encoding specifies the encoding of the Bib-file.

[crsh]

Hi @GegznaV, has this issue been resolved (except for the upstream encoding issue)?

[GegznaV]

It seems that only the upstream issue is left.