wrong bash beautifier colors

[braoult]

Not sure if this link is valid, nor if it is on exercism side:
On:
https://exercism.io/my/solutions/7a25d82ea512403280f7fd168040eefb
... colorization is wrong from line 57, likely from column 21, the quote (') char (which is escaped with "") looks like a normal quote, which makes all following code wrong.

[glennj]

This is not an issue for the bash track. Exercism uses https://github.com/PrismJS/prism for syntax highlighting, so really the bug report should go there.

[glennj]

This module uses regular expressions to parse code, which is a good-enough-but-not-perfect approach. Here's where they identify a quoted string: https://github.com/PrismJS/prism/blob/master/components/prism-bash.js#L122

[braoult]

There is a workaround: instead of ' syntax, the "<char>" seems to be understood by prism. another is to remove the quotes in comments:

Initial faulty lines:

printf -v aval "%d" \'a                   # 'a' ascii value
printf -v zval "%d" \'z                   # 'z' ascii value

The following works with prism:

printf -v aval "%d" \'a                  # "a" ascii value
printf -v zval "%d" \'z                  # "z" ascii value

as well as this :

printf -v aval "%d" "'a"                # 'a' ascii value
printf -v zval "%d" "'z"                # 'z' ascii value

Looks like prism is "lost" by having the multiple single quotes on same line, for some reason. I filled a bug report PrismJS/prism#2255).

[braoult]

It has (normally) been fixed in prism:

• bug report : [bash] issue while escaping quote PrismJS/prism#2255
• fix : Bash: Added support for escaped quotes PrismJS/prism#2256