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change '..' to 'STATEMENT'. Because initially, when I see '..', I thought it means go to parent directory.

Xiao Liang
2017-01-27 00:08:02 -05:00
parent 91049dd56c
commit 289593c64f
1 changed files with 3 additions and 3 deletions
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6
SC2006.md

@@ -1,4 +1,4 @@
# Use $(..) instead of legacy \`..\` # Use $(STATEMENT) instead of legacy \`STATEMENT\`
### Problematic code ### Problematic code
@@ -14,13 +14,13 @@ echo "Current time: $(date)"
### Rationale ### Rationale
Backtick command substitution `` `..` `` is legacy syntax with several issues. Backtick command substitution `` `STATEMENT` `` is legacy syntax with several issues.
1. It has a series of undefined behaviors related to quoting in POSIX. 1. It has a series of undefined behaviors related to quoting in POSIX.
1. It imposes a custom escaping mode with surprising results. 1. It imposes a custom escaping mode with surprising results.
1. It's exceptionally hard to nest. 1. It's exceptionally hard to nest.
`$(..)` command substitution has none of these problems, and is therefore strongly encouraged. `$(STATEMENT)` command substitution has none of these problems, and is therefore strongly encouraged.
### Exceptions ### Exceptions