fix(coverage): count only the braces that are code when spanning a function

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085

[Chemaclass]

🤔 Background

Related #1086

A function ended where its braces balanced, counted with no regard for quoting.
One stray brace in a comment, a string or a heredoc kept it open, and it
swallowed every later declaration in the file — src/coverage/lines.sh
reported 1 function instead of 11.

💡 Changes

• Quote and heredoc state is carried across lines, since both span them, and a declaration is recognised only on a line starting outside either
• Bash is the oracle: under extdebug, declare -F gives the real start line of all 697 functions in src/, and extraction now matches every one — it was 19 missing and 2 spurious (END { of an embedded awk program read as a function)
• FN, FNDA, FNF and FNH change (680 → 697 records here); LF and BRF are byte-identical
• Same output on macOS awk, BusyBox awk and mawk; the scan costs 535 ms for 128 files against the 2238 ms Bash loop removed in perf(coverage): scan function declarations in one awk pass #1085