A NOTE has been added to this issue. ====================================================================== https://austingroupbugs.net/view.php?id=1820 ====================================================================== Reported By: mortoneccc Assigned To: ====================================================================== Project: 1003.1(2016/18)/Issue7+TC2 Issue ID: 1820 Category: Shell and Utilities Type: Enhancement Request Severity: Comment Priority: normal Status: New Name: Ed Morton Organization: User Reference: Section: awk Page Number: 0 Line Number: 0 Interp Status: --- Final Accepted Text: ====================================================================== Date Submitted: 2024-03-14 11:36 UTC Last Modified: 2024-05-13 15:07 UTC ====================================================================== Summary: The impact of changing NF should be stated ======================================================================
---------------------------------------------------------------------- (0006779) geoffclare (manager) - 2024-05-13 15:07 https://austingroupbugs.net/view.php?id=1820#c6779 ---------------------------------------------------------------------- On Issue 8 draft 4.1 page 2613 line 85507, change: <blockquote>Field variables shall be designated by a '$' followed by a number or numerical expression. The effect of the field number <i>expression</i> evaluating to anything other than a non-negative integer is unspecified; uninitialized variables or string values need not be converted to numeric values in this context. New field variables can be created by assigning a value to them. References to nonexistent fields (that is, fields after $<b>NF</b>), shall evaluate to the uninitialized value. Such references shall not create new fields. However, assigning to a nonexistent field (for example, $(<b>NF</b>+2)=5) shall increase the value of <b>NF</b>; create any intervening fields with the uninitialized value; and cause the value of $0 to be recomputed, with the fields being separated by the value of <b>OFS</b>. Each field variable shall have a string value or an uninitialized value when created. Field variables shall have the uninitialized value when created from $0 using <b>FS</b> and the variable does not contain any characters. If appropriate, the field variable shall be considered a numeric string (see Expressions in awk, on page 2608).</blockquote> to: <blockquote>Field variables shall be designated by a '$' followed by a number or numerical expression. The effect of the field number <i>expression</i> evaluating to anything other than a non-negative integer is unspecified; uninitialized variables or string values need not be converted to numeric values in this context. Each field variable shall have a string value or an uninitialized value when created. Field variables shall have the uninitialized value when created from $0 using <b>FS</b> and the variable does not contain any characters. If appropriate, the field variable shall be considered a numeric string (see Expressions in awk, on page 2608). New field variables can be created by assigning a value to them. References to nonexistent fields (that is, fields after $<b>NF</b>), shall evaluate to the uninitialized value. Such references shall not create new fields. However, assigning to a nonexistent field (for example, $(<b>NF</b>+2)=5) shall increase the value of <b>NF</b>; create any intervening fields with the uninitialized value; and cause the value of $0 to be recomputed, with the fields being separated by the value of <b>OFS</b>. Directly increasing the value of <b>NF</b> (for example, <b>NF</b> += 2) shall have the same effect as assigning an empty string to $<b>NF</b> (where <b>NF</b> has its new value). Decreasing the value of <b>NF</b> to a non-negative value shall remove all fields after $<b>NF</b> and cause the value of $0 to be recomputed, with the fields being separated by the value of <b>OFS</b>. Assigning to <b>NF</b> without changing its value (for example, <b>NF</b> = <b>NF</b>) shall cause the value of $0 to be recomputed, with the fields being separated by the value of <b>OFS</b>.</blockquote> Issue History Date Modified Username Field Change ====================================================================== 2024-03-14 11:36 mortoneccc New Issue 2024-03-14 11:36 mortoneccc Name => Ed Morton 2024-03-14 11:36 mortoneccc Section => awk 2024-03-14 11:36 mortoneccc Page Number => 0 2024-03-14 11:36 mortoneccc Line Number => 0 2024-03-15 13:50 salewski Issue Monitored: salewski 2024-05-13 15:07 geoffclare Note Added: 0006779 ======================================================================
